Disclaimer: I don't own any characters.

Chapter one

Caitlin woke up with a huge headache, feeling sticky and sore from yesterday night's events. She couldn't remember much, and she was sure she didn't want to.

She slowly sat up, making sure that her brain wouldn't bounce around inside her head. Her hands reached up to her phone and she checked the time, 9:43 am. Realizing that she was late, she quickly stood up but soon regretted it as her head started throbbing.

Caitlin looked at her desk and saw a letter there, a cup of water and some Advil lying on top of it. After taking the pills and drinking the whole cup of water, she read the letter:

Dear Caitlin,

You're welcome. I had to drag you all the way here from the bar, since you were drunk. You probably know that because you just woke up from your biggest hangover ever! By the way, best night of my life, got to see The Dr. Snow get drunk. Drink lots of water, you know the basics. Don't worry about work either, I told Dr. Wells that you weren't feeling well.

From,

Your awesome" Brother"

( as you like to call me)

P.S. There's something on Facebook you should really see. I shared it with you. Don't know who posted it, but it's up there.

After reading Cisco's letter, she was going to grab her phone and see what Cisco was talking about, but the sudden pang of her headache reminded her that she was still sticky and sore, so she decided to take a hot shower instead.

When Caitlin was done, she grabbed her phone and opened up her Facebook page. On her notifications, she saw that Cisco had sent her a video, so she opened it and the title read: " HOTTEST KISS EVER!"

She watched herself and a complete stranger- who she thought was hot, genetically speaking, since she's a geneticist and all- making out in the corner of the bar she went to yesterday.

She stopped it and groaned in frustration. A hangover and finding out she made out with a complete stranger? The universe was definitely not on her side.

AN: I'm sorry it's short, I'll try to update as fast as I can if you would like to read more. Thanks for reading! Oh, and I would like to give a special thanks to both AReiss215 and , because they inspired me to write this story. They're amazing writers, so if you haven't read any of their stories, you should do that.