So this was a prompt for a drabble from an anon on Tumblr but I kinda went overboard and turned it into a full-fledged one-shot.

I in no way condone teacher/student relations except in the case of teacher!Finn and student!Rachel and that's only because they're fictional.

If you want to read some more teacher/student Finchel that's totally awesome, if you haven't already, you should read The Substitute by Weasley's Revenge. It's Asian A+!

So without further ado, I present Teacher's Pet...

Detention? Detention. This was an outrage! A scandal! There had to be some mistake because Rachel Berry never got detention. Rachel Berry was the anti-detention and the definition of perfect student. She always did her homework, was always eager to answer questions and have open discussions about the material in class and 99 percent of the time arrived to every class on time or in most cases even early. But of course the one day that is a giant clusterfuck of epic proportions, Rachel's favorite teacher Mr. Hudson had to give her detention because she arrived two minutes late to English and had forgotten about her homework.

What was going on? Mr. Hudson didn't give out detention except to real troublemakers like Noah Puckerman and Dave Karofsky so why was he giving it to his favorite student? She didn't want to toot her own horn, even though she often really did want to, but Rachel knew in her heart she was Mr. Hudson's favorite student. They got along so well, always talking about books they loved and music and Rachel's bid for stardom on Broadway. He believed in her often when no one else did and for that Rachel was eternally grateful, so why couldn't he just cut her some slack for one off day?

So Rachel arrived at Mr. Hudson's in a huff and demanded to know why she was being kept afterschool against her will. She did have things to do for the musical and glee club both after all. "Mr. Hudson, I think it is absolutely uncalled for and unfair that you are subjecting me to an afternoon of detention! I told you in class that today was simply an off day and-"

"Sit down and stop talking," Mr. Hudson cut in gruffly as he stood up from the seat behind his desk and crossed over to the door, shutting it. What Rachel didn't notice was the lock turning on the knob while she followed his directions.

Finn stared at the door momentarily, swallowing thickly and taking a deep breath before turning around to face Rachel. He knew this would be awkward, but for his sake and Rachel's he needed to confront her about this. He walked back over to his desk and pulled the piece of paper out from the top drawer.

Wordlessly, he slipped the piece of paper onto Rachel's desk and stood there waiting for her reaction.

"Mr. Hudson, I don't understand what is going on."

"Read what's on the paper," he replied with a nod to the sheet of notebook paper. Rachel sighed and looked down at the sheet, eyes widening and heart rate increasing as she viewed her handwriting and gold stars covering the page. Her heart stopped completely when she read the first sentence on the page knowing it only got way more descriptive and erotic as the writing went on.

I had a dream last night that Mr. Hudson came over and fucked me against a wall.

Rachel couldn't read beyond that for embarrassment and utter humiliation began to settle in. Her breathing became more ragged and her eyes shifted rapidly, searching for anything to land on other than the paper or Mr. Hudson.

It was a page from her dream notebook. Ever since Rachel could remember her dreams had always been vivid and fantastical and nonsensical and she liked to write them down to remember them better. Whether they were scary or perfect or just outright weird she wrote every dream down and her dream about Mr. Hudson was no exception.

The Mr. Hudson dream had been a particular favorite of hers. It had occurred a few nights ago and was so intense Rachel woke up sweaty and like she had just run a marathon in the middle of the night. She was so riled up that she couldn't fall back asleep so she wrote about the dream in the greatest detail she had written about any dream which only led to wetter panties and a burning need that she had to try to satisfy. That was the first night she had ever touched herself in 18 years.

But now Rachel was anything but turned on as she tried to discern how Mr. Hudson had ended up in the possession of her most personal piece of property ever. "How did you get this?" she asked meekly, barely above a whisper. She still couldn't look at him.

"It was stuck to your paper you handed in yesterday," he replied quietly. "I think we need to talk about it. This is why I gave you detention to make sure you would show up here. Rachel," he put his hand on her desk and she flinched back. He knelt down and tried to capture her eye. "Rachel, this is the most descriptive writing I've ever seen. You've got a real knack for it…but you shouldn't be writing about me. You shouldn't be dreaming about me."

"I know," she stated softly. "I can't help what my subconscious thinks about though."

Finn nodded. He knew what Rachel meant, boy did he ever. "You shouldn't have these feelings for me. I'm your teacher." But that didn't really matter because he felt like their relationship was way more than just a student/teacher one. "And you're my student which is what makes it really difficult for me not to act on the things you've written here." A pause. Shit! Did he really just say that out loud? That was not what he meant to say at all!

Did he just…? Rachel thought to herself as she finally looked up and saw the conflict and panic written all over Mr. Hudson's adorable face. "Mr. Hudson…"

"Rachel, that is not…not what I meant. I meant that even though you're a very attractive woman, I mean girl, our relationship needs to be professional. I'm your teacher and it would be wrong of me to take advantage of any feelings you have for me just because I would like to." SHUT UP, HUDSON! Why couldn't he stop the word vomit? Everything he was trying to say was coming out so wrong! He needed to make Rachel not feel things for him but instead he seemed to making her realize that, like her, he had a few inappropriate thoughts that were really not kosher to have regarding their relationship.

Suddenly, Rachel's mouth broke out into a satisfied grin. "Mr. Hudson, how old are you?" she asked abruptly.

"Twenty-four." Damn it! Why was he answering her question?

"You know, I'm 18 and I'm happily unattached. Do you have a girlfriend?"

"No." Seriously! Shut up!

She contemplated this piece of information, licking her lips and running her slender fingers over the exposed portion of her chest. "You realize that it's February right now Mr. Hudson. I will only be in high school for another three and a half months then it's off to college in New York City and I won't be in Lima again for a very long time." She pouted a little as she explained the future. "We've been close since you started her last year Mr. Hudson. We should really enjoy the small window of time we have left together, don't you think?"

Under normal circumstances Rachel would never act so flirtatiously toward a teacher but his statements made her realize that what she felt wasn't one-sided. He felt things for her too and as far as Rachel could see, there was no reason why they couldn't act on those feelings if they were both consenting adults.

Finn could only gulp and stare at Rachel's hand which was slowly dipping below the low-cut collar of her shirt. He managed to tear his gaze away from her chest and found himself staring into her lust filled eyes. She bit her lip in a cute, yet sexy, manner and he could feel himself growing hard. How did he get here? He was not that guy who had affairs with students. Finn became a teacher because he wanted to help inspire kids the way his teachers had inspired him. He wanted to make sure they would actually learn something while at school and not just use it for a social platform. Finn didn't get into this line of work to ogle teenage girls who had the hots for him and he certainly didn't mean to develop deeper feelings for one of them…although she was 18 – NO! He had to nip this in the bud before it got out of hand.

"Rachel, this is very inappropriate and we can't go th-"

Before he could end the conversation and send Rachel on her way and go home and take a really cold shower while thinking of killing the entire United States Postal Service with a Mac truck, Rachel leapt out of her chair and flung herself at Finn, knocking him back into his desk. A few items fell off and papers scattered everywhere. He could feel her nails digging into his shoulders as she clung to him tightly and began kissing him.

Her kiss was amazing, better than any other kiss with any other woman and made his brain go foggy with his craving for her. Finn forgot he was a teacher and she a student and all the politics and moral implications behind that and for a moment they were just Finn and Rachel, two people who were sexually drawn together and appeared to have amazing chemistry. But then Finn snapped out of it when Rachel began tugging at his belt.

"Whoa, whoa, whoa, Rachel, stop it. We…we can't do this!" he cried out as he shoved Rachel off him as gently as he could without physically hurting her. Her lips were already swelling and her cheeks were flushed. She looked beyond sexy.

"What is the problem? I'm legally an adult and I'm consenting to do this with you. We both want each other and you can deny it all you want but you want me. No wonder we get along so well, Finn." She had never called Mr. Hudson by his first name but she really liked how it felt and sounded. Finn. What a perfect name.

"It's Mr. Hudson, Rachel and we get along because we have similar interests. That's all." He knew it was more than that but he had to get Rachel to back off.

She scoffed, seeing right through him. "Please, we both know it's more than that. We have something very few people ever find. I can tell. So maybe we found it in a place most people would deem improper but who cares what they think? I swear I won't tell anyone about this. I would never want you to get into trouble over me." Rachel leaned forward and started kissing Finn once more, undoing his shirt buttons, only to be shoved back again.

Clearly she would need to step up her game.

Finn's resolve was beginning to wane but he had to try. Everything Rachel said was true but that didn't mean it was right. If he had to throw her out of the classroom and quit his job and move out of state to keep them from making a mistake with each other he'd do it. Or at least he would have until Rachel removed her shirt and revealed the cute satin pink bra she was wearing underneath.

His mouth and throat went dry as his breathing stopped. Rachel smiled at him then he could tell a thought hit her. She started for the door.

"It's already locked," he called after her knowing that's what she was going to check and not that she was going to leave and pretend this whole incident never happened. Rachel looked back at him over her shoulder and brushed her hair out of the way. A smirk played on her lips and she slowly turned around to saunter back over to him.

"Now why would the door be locked already if you didn't think this would end in us fucking?" she asked in a sultry tone, biting her lip as she pressed herself against Finn and swiped her finger over his jaw line before her hands went back to unbuttoning his shirt.

"I was," he gulped, "trying to…" Oh hell what did it matter, Rachel was standing in front of him half naked and his whole body was crying out to take her. "Oh fuck, I give up." He roughly pulled Rachel's head closer and crashed his lips down hard on hers. His hands weaved through her hair and he could feel Rachel working on his belt again. She ripped it out of his pants and hastily unbuttoned and unzipped them.

Before his mind registered that she had broken their kiss, Rachel was on her knees in front of him, pulling him out from his pants and boxers. Both garments fell to the floor and he looked down to see Rachel smoothing her hand over his chubby making it a full and painful hard on. She glanced up at him through her lashes and smiled before sucking on his tip.

Her mouth and lips felt amazing on his skin and he just wanted even more. Without meaning to his hips bucked forward forcing more of himself into her mouth. Rachel adjusted and instead of pulling back, took more of him in. He needed to stop her otherwise he would explode right there. Finn pulled out of her mouth startling her. She looked up, worry all over her face.

"Did I…did I do something wrong?" she asked in a tiny voice. She hoped she hadn't hurt him. He was making what she assumed had been happy noises…

"No, nothing. I just…you were too good." His cheeks pinked and he ran his hand through his hair nervously. He put his hand out for her to take. "Come here."

Rachel put her hand in his and allowed him to pull her up and subsequently sat her on his desk. He settled between her knees and resumed kissing her. His fingers fumbled for her bra clasp, finally unhooking it on the third attempt and he ripped the fabric away from her body while she finished getting his dress shirt and under t-shirt off him. He did notice she left the tie on though.

Wanting to take his time on Rachel's body, Finn slowly kissed down her neck to her shoulder and collarbone and upon reaching her breast, took a pebbled nipple between his teeth. Her body arched into his as she snaked her fingers through his hair, moaning as he sucked harder on her nipple. "Oh God, Mr. Hudson," Rachel moaned out, head falling back, eyes closed, as his hands slid up her thighs. His mouth broke from her skin.

"You can call me Finn," he said in a deep husky voice before continuing to worship Rachel's chest with his mouth. A few seconds later his fingers found the waist of her panties under the criminally short skirt she had worn to school that day. Without hesitation, Finn ripped the panties down her body and threw them over his shoulder.

Rachel's bare ass sat on the edge of Finn's desk as he moved his kisses down her body until he arrived at the waist of her skirt. He pulled away from Rachel and stared into her eyes watching him as he shoved her skirt up and knelt down in front of her. She could feel an intense pull in her center and a throbbing she had never experienced before.

Finn's eyes widened as he looked at her dripping entrance. She was so wet for him it was almost too much. "Oh baby, you're so wet," he mumbled as he dipped a finger inside her. Her body shuddered and she released a strangled moan of pleasure. Her legs shook from the force of it. "Do you always get this wet when you think of me?" He looked back up at Rachel who nodded with a slight pout. "Good."

Without any further wait, Finn dove in and began lapping up Rachel's juices as she writhed and moaned above him. He wrapped his arms around her legs to keep her still as he worked on her clit, teasing it with his tongue and sucking hard on it between his lips. His fingers were inside her when he could feel her tightening around them and it was only a few minutes after he started that she was losing any control she had and coming furiously on top of his desk.

When she screamed out her bliss, Finn pulled away and shot to his feet to cover her mouth with his hand. No one could know what they were doing in his classroom together and her screams would alert someone to it. She looked angry at his face leaving her pussy mid-orgasm so to make it up to her he quickly aligned himself and slammed into her. The desk scraped against the floor as it moved from the force and Finn lost his footing falling on top of Rachel. His hand slipped away from her mouth and she was able to speak again.

"Fuck me, Finn! Please," she whined, not caring that he had just bashed her against his desk.

"You have to be quiet, Rachel. No one can know," he reminded her in a hushed voice before beginning to move his hips back and forth. She moaned and he felt her walls tighten around him again. "Oh God, you're so tight."

"Harder Finn!" she cried out. Her legs wrapped around Finn's waist tightly to hold him to her as close as humanly possible. "Go deeper."

Finn pushed further into her forcing lower and longer moans from her mouth. She was fucking perfect and he didn't care what happened to him for fucking her, he was so glad she had been so persistent and would never regret being buried inside her. "Fuck, Rachel. You're so fucking good." Feeling like a beast, Finn lifted Rachel up in one swift motion and began pounding into her in a free stand. She was small enough and light enough that it was no problem to hold her against him without support.

Rachel kissed him again, shoving her tongue into his mouth and massaging it with hers. She could taste herself on him and was instantly more turned on. "Finn, make me come. Make me come, baby." Rachel couldn't believe she just called Finn, her teacher, 'baby' but she did and it felt so right. He felt so right.

She had only ever been with Jesse who turned out to be a selfish jerk and dumped her after he had gotten his fill of Berry pie but that didn't matter now. He was nothing compared to Finn and had been lacking on many levels. Jesse had always felt unfulfilling in both the size and use department as he always seemed too small and thin to fit in right and had never accomplished getting Rachel to orgasm. Finn on the other hand seemed made to fit inside her as he was the perfect girth and length to fill her completely with the perfect sensation of friction and had already given her an orgasm on the first try and was well on the way to his second. Yes, what she and Finn had was special and everything about that moment was so right even though society would deem it so wrong.

Finn was losing energy at a rapid pace from their intense fucking and he knew he was going to blow his load soon. He had to get Rachel off first though. His own orgasm would never be satisfying if he couldn't achieve that. Finn leaned his body back against his desk and moved Rachel's hips on his member. Her arms wrapped around his neck and he moved his hand between them to find her swollen nub. It took only a few grazes of his thumb and she was falling over the edge again, fighting to keep quiet, whimpering from the euphoria.

The combination of feeling her hot walls pulsing rapidly around him and watching her body engulf his member was too much for Finn and he came right after her, swelling and spilling into her harshly. He was silently screaming until he couldn't hold back the sound anymore and let out a gurgle of a moan. Rachel slowly moved her hips back and forth to milk Finn of every last drop and he didn't pull out until he was sure he was done. As he slid out, his hot cum dripped out of Rachel and he realized the mistake he made.

"Oh God, Rachel, I'm so…I'm a fucking idiot. I forgot a condom…" Now he was freaking out! It was bad enough he had succumbed to his wanton physical desire with a student, now he had to worry about whether or not he got her pregnant! He was like a male version of Mary Kay Letourneau!

Rachel started laughing however. "It's okay; I'm on birth control and have been since I was sixteen. You don't need to worry." She pulled him forward by his tie to kiss away his anguish. "That was amazing. You are most definitely my favorite teacher."

Finn couldn't help but smile. "I hate to tell you this but that kind of just made you Teacher's Pet. The other students may resent you now." He chuckled and kissed her again.

"They already do so it doesn't really matter." She sighed happily and unwound herself from around Finn finally. "You know, I have a lot of homework I could use some one-on-one tutoring for. Perhaps we should schedule some afterschool help for a few days out of the week." She arched her eyebrow at him and the corner of her mouth twitched upward.

Finn was already in so deep it he couldn't fight it anymore. He had to have Rachel and as often as possible in as many positions as they could think of, so he agreed. "Yeah, of course. My door is always open for you, but I'm thinking, maybe we should take the studying to a more private place…like my apartment maybe."

Rachel's face drew together in thought. "I think that is a good idea. Perhaps we could study tonight since my fathers won't be home until late and I'd be so alone at home by myself." She looked at the floor then back up to Finn who was smiling at her.

"Do you need a ride?"

"In more ways than one." She giggled as Finn began to blush at the innuendo and how Rachel's breasts bounced with her laughter. "So are we on for tonight?"

Finn pulled her against him and gave her a deep kiss. "I'm on for right now but we should really get out of here. Get dressed and we can go." He kissed her again quickly and as she pulled away to get dressed he smacked her tush playfully. Rachel looked back at him and giggled.

Mr. Hudson really was the best teacher ever.