The darker it is and the more beer present, the more likely it is that you will be back- humped by a frat guy. But don’t worry, it’s the frat boy's way of saying, “Hello, I’m drunk and you have a vagina, please let me stimulate my penis while grinding on you.” Because this usually takes place in a dark basement, it means it’s somehow OK. Most don’t even mind that you can feel their aroused penis slithering over your leg while dancing at a party.

He's probably a frat guy if...

1. He has a tribal arm band tattoo
2. He wears polos with popped collars
3. He wears white rimmed sunglasses and/or puka shell necklace
4. He owns seven blue vertical stripped button up shirts
5. He is Business major, probably marketing.
6. He uses the Facebook “top friends” application to rank the doability of the neighboring sorority girls
7. He thinks a Milano is a half white, half black person
8. In each of his Facebook photos he has either 2 red cups, or 2 fake and baked blondes.
9. He wears floral board shorts while swimming