Twisted sister love

(cartoonetwork multiverse)

We all know the story of Dexter and DeeDee. They always used to chase each other in the secret lab of Dexter. The younger boy wasn't happy to have her older sister around in his lab. They went through various fights and adventures together as kids.

Some time has passed and as the siblings became older they had changed as well.

Last week Dexter just turned 15 years old and Deedee was now 18.

The young genius spent less time in his lab recently and focused more on his studies. He just started highschool and he really wanted to make a good first impression on every teacher and student.

His sister on the other hand got problems with her grades and learning. It was her last year and she had to take her final exams. She was never was as bright as her brother. She always wanted to be a ballet dancer because dancing was the only thing she could do with joy and love. Since Dexter spent less time in his lab there was no reason for DeeDee to be there.

The two siblings spent more time with each other outside of the lab. Dexter helped her sister with her homework and he gave her tipps for her finals.

It was the second week of the school year and our two main characters were sitting in DeeDees room after dinner. The blonde girl was reading her notes when a question popped into her mind.

-How are you giving me tips about the finals when you just got to taste high school life?

-Oh please sis. I've have been through a tons of scientific stuff and research and thanks to your destructive behavior I afraid of no tests and you shouldn't be afraid either. You were there too remember? Just do as your 12 year old self would do.

-But what if I blow it up? Like I did with your experiments… I really don't wanna blow this up Dexter…

- don't worry. You have still plenty of time to prepare and with my help you'll do just fine. I'll help you. I am genius sis. Finals are nothing to me. Look I am working on my newest invention to amaze the chemistry teacher…

DeeDee's eyes suddenly lit up and she saw the blueprints and she didn't let Dexter to finish the sentence.

-Dexter! I have an idea! Can you build a machine that switches our bodies and minds? That way you can go do my finals instead of me.

The young scientists rolled his eyes and angrily snapped her sis in the face.

-Ouch.. Hey what was that for?

-First. You didn't let me finish what I was gonna say. Second : NO WAY!

-But Dex..

-No means no! I rather kill myself… twice than switch bodies with you.

-How do you kill yourself twice?

Dexter took off his glasses and placed his head between his palms and he let out a painful growl.

A few minutes later the kids mother stepped in. The parents still didn't know abaut their boys laboratory.

-Children I think its time to go to have a shower and go to bed. Don't forget to brush your teeth!

-Yes mom- replied Dexter as the mom closed the door. - Ladies first

DeeDee put away her books and pencil cases, grabbed her pjs and started heading to the bathroom.

"oh dear Einstein. That girl is giving me the worst headaches." - he thought to himself.

He noticed that she left her phone unlocked on the bed.

"I shouldn't do this. I respect personal space but something is bugging me"

He grabbed DeeDee's phone and opened her chats. She had a conversation with her stupid friends but something was off.

"What? Is that Mandark? Is he still has a crush on her?

*chat* 19:45

*Hi DeeDee!

*What's up Mandark?

*Well yesterday conversation was pretty good and I was wondering… IfIf you could send me some pictures.. Of you.. Without your clothes?

*DeeDee are you here?

*chat* 20:05

"Oh look at that… How adorable.. But at least my sis didn't gave him any infos abaut my lab.

He wants nudes ha? We'll see abaut that"

Dexter put a devilish grin on his face and quietly sneaked into the bathroom. His sister still was in singing in the shower.

He approched closer and managed to got the mobile in hand behind the shower curtains.

He took a photo without looking and she didn't even noticed it.

"gotcha sis"

He got out before anyone could notice him and he sprinted back to the room.

"Lets see what do you have to say abaut this Mandark"

He was going to send the picture to the black haired maniac but he stopped.

He couldn't get his eyes off of DeeDees naked wet body. Her skin seemed smooth and her booty was so round and bouncy looking.

"I don't even know when was the last time I saw her naked. It feels funny.. I kinda understand now what Mandark likes abaut her. She is.. Sexy and I can't believe that I can't stop stareing at this. What's wrong with me?

He felt his pants tighten around his manhood and it was uncomfortable.

"No way! She is my sister for fucks sake this shouldn't happen" Come on Dex calm down.

At this exact moment DeeDee entered the room. Dexter quickly erased the picture.

-Dexter what are you doing with my phone? Give it back!

DeeDee grabbed her brothers hand and took the phone away.

-You are so cute when you are curious brother but you know its not nice to read someones private chats. But don't worry I am not angry.

Dexter blushed and didn't say a word. As her sister was searching for her hairdryer he left.

He went straigh to the bathroom.

Under the shower he was kept thinking abaut that picture.

"I don't know what has gotten into me? I shouldn't have taken that photo or even look into her phone. But somehow I couldn't help it. Its ironic.. Back than I was always so furious when she didn't respect my privacy in the lab. And now… I was way too curious. I just wanted to see how Mandark would react its nothing wrong with that is it!? .. But I don't understand why have I became so turned on when I saw her?

His thoughts were racing in his mind. He wanted to forget what just happened but it seemed his sister hipnotized him.

Later when he was alone in his room, tucked in bed he was still not calm enaugh to sleep.

"This is unbelievable I can't believe myself. I have to go to the lab.

With that said he opened the secret door and went downstairs.

-Good evening computer!

He sat down in his chair in front of the big screen. His fingers were running wild on the keyboard and his face was serious.

-Computer show me all the recorded footage of my sister.

*file DeeDee the distractor… running. *

Shorty DeeDee appeared on the screen dancing in the middle of the lab. She was 10 years old. The videos were playing in chronoligical order and they showed every moment of the girl's doings.

There were funny and sad moments and even embarassing ones.

As footage after footage went by Dexter shortly noticed some changes. The 14 year old DeeDee seemed prettier than the 12 year old one. The 16 year old seemed more mature. her breast were bigger and her face was cuter.

Finally the last footage from summer. The 18 year old current version of her sister.

In this video she was running after a bunny that somehow got into the lab.

"strange.. I don't remember this.. I wasn't here?

Dexter zoomed in to have a closer look of her. As she was running her face was sweaty and her tits were bouncing up and down. At the end of the recording she finally caught the bunny amd squeezed it against her chest.

Dexter here paused the video.

"Look at that . They definitely got bigger as the years past amd I didn't even noticed how my sister grown so much. I wish I was that bunny"

He rewinded back to the moment of cath and he paused here too.

He got the perfect frame when DeeDee bent down. Her pink skirt slid up and she gave a nice pantie shot to thw camera, making the sight more enjoyable. Her booty seemed bigger this way too.

Dexter felt his manhood rising in his pants as he was looking at her sister's derriere. He was blushing when he became aware of it.

"Not again! Oh this is so embarrassing and unhealthy. But I can't help myself. She is too good. Why is she doing this to me? I can't take it anymore. A little bit of self indulgence won't hurt.. I am not doing anything wrong with this.. Its just late and I can't get my hormones down… Hopefully thats the case.

As he unzipped his pants and got into the pleasure he wasn't paying attention to his surroundings and he didn't heard that DeeDee secretly entered the lab

The blonde haired girl strangely remained silent and watched herself on the computers big screen. She has not seen what her brother was doing. She faced the back of the chair.

Dexter was breathing and moaning and it echoed in the big metal walls of the lab.

Her sister still stood there staring at the screen.

"I know that what I am doing is wrong… But I am almost done.."

He reached his climax and sit back in his chair, letting out a loud moan with a sigh..

"Shit. I got it on my clothes again. Why do men have to relaise so much of this stuff?

He reached forward to take a tissue from the desk when DeeDee finally spoke.

-Dexter are you okay?

The young boy suddenly jumped and put away his youghurt holder. He was very annoyed and his head was red as a tomato.

-DeeDee?! What are you..!? How long have you been here?! Get out immediately!

He squeezed his hands between his legs when he heard his sister's footsteps as she approached closer to him.

-I heard you making strange noises. I thought you got hurt.. And I was going to ask why am I on your big monitor.. With my booty close up?

-Well.. I needed this footage for research purposes.. and

The next moment Something sudden happened. DeeDee put her arms around her brother who was still looking at the screen.

-Dexter even that late you are still experimenting and you using my picture for that.. Its just so cute

He felt like his head is going to explode and his body heat went high up..

"What the fuck? Is she really that naive? Does she even know.. How to.. And what is…? She is 18.. How could she be that stupid.

-What were you doing in my lab in that hour late anyway?

-After I went to bed I had to pee so I went to the bathroom and when I was coming back I saw your bedroom door was open so I came in to check on you but you weren't there so I thought you must be here.

-I told you a hunderd and seventy five times sister there is no need to check on me!

Dexter was angry but still blushing when he snapped himself out of DeeDees embrace and turned to face her.

-I am gonna go back to bed for now and you better do the same too.

He stood up and walked towards the exit and his sister followed him close by

-Anyway! What kind of experiment you were working on?

Dexter blushed again and covered his face with on of his hands

-Just shut up and don't follow me like that. Mind your own business I am tired.

"Hmm I really did not think that my sister is that dull even at that age. I know I shouldn't take advantage of this but I have to see it myself"

Next morning when he drowsily opened his eyes he felt something soft and squishy next to him

"Strange.. I don't remember these extra pillows. Whatever, they are so soft a few more minutes of snooze won't hurt."

He closed his eyes againg and snuggled closer with the "pillows" when out of nowhere he heard a familiar voice

-Good Morning Dexter!

His eyes snapped open and he quickly sat up

-DeeDee! ? How did you get here what are you doing in my bed!? Sneaking into my lab is one thing but sleeping in my bed is completely different.!! This is private property!

-Aw but Dexter. You always were so cute when you are sleeping and yesterday I recognized the date on the security footage you were watching, and I remembered that that was when you were turned into a bunny and you were bouncing around the lab and I caught you and give you warm huggies. And I love giving huggies to my cute little brother and we haven't slept together since I was in kindergarten and I missed that. You see?

-Whatever just get out of my bed…

He wanted to push her off but the girl grabbed his pj sleeves.

-Dexter wait! I know I am a bit clingy lately buts that's because… You know I am going to leave soon and go to college and I am gonna miss..

He raised one eyebrow and gave his sister a confused look

-Miss what?

-My room, mom, dad, my friends and.. You..

With that she gave him another hug but this was somehow warmer and actually felt nice for the young scientist.

-I am gonna miss you Dexter. You are and you always will be my little brother and I am gonna miss those fun times we had together.

DeeDee was now crying and squeezed her bro even closer and stronger.

"Now I don't want to be that bunny.."

-Ouhh.. Sis.. You're crushing my lungs

-Oh sorry. I got carried away. I let you go. You were so cute by the way when you snuggled closer to me earlier.

Dexter now was ghasping for air and turned red in a same time he was annoyed by her sister presence.

-Shut up..

-Aw brother you are so cute when you embarassed. - She smiled and petted him on the head

-Dee Dee look. I understand you.-said the young boy putting up his glasses-

It's not gonna be easy but please try to suck it up. Its just the way it is. You've grown up and ready to leave the nest. You are an adult now so act like one. And now if you don't mind I want to change clothes and got ready for school so get out.

She stood up and left the room letting out a long sad sigh.

"Maybe I was too harsh. Or she is just too sensitive. She needs some tough love anyway to deal with her problems. I can't show any weakness. But truth is I am gonna miss her too. "

When he got ready he left his room and he wanted to go downstairs but something got his attention. His sister was phoning with someone but it wasn't a girl He didn't understand what he was saying but DeeDee sounded angry.

"Mandark!? "

He sneaked closer to the door, listening

- I don't understand.. Why are you so curious about how I look without my clothes… Its just weird.. I know but I don't show it just to anyone…. I

I know and I love you too but I just don't understand….. Look I don't have time for this. I call you back after school Bye

"I am so curious what would have happened if I had sent that picture to him. He would have got instant nosebleeds and he wouldn't dared mess with me after that.. I haven't really thought abaut how DeeDee feels abaut him. And as I thought she doesn't really understand why he wants that photo so bad..

He was abaut to go away when he heard her sister saying. - Now its time to change.. Gosh I am gonna be late again… Stupid boyfriend..

He blushed agaim and his little legs didn't want to move away from the door. He took a peek through the keyhole and he saw her naked again even just for a few seconds

"I still can't believe I am that big of a pervert… But its her fault.. With a look like this she shouldn't be legal."

When her sister finished changing he ran down the stairs just in time to grab his breakfast and catch the school bus.