There are several ways to tell the difference between a guy and a girl: length of hair, ability to drive a car, absence of a penis, etc. But one surefire way to shout your gender from a mountaintop is what you post on your dorm room wall. Your dorm room says a hell of a lot about you. If you have a poster of a dolphin, you want to be a marine biologist (or you’re just lame in general). If you have a poster of Scarface, you like violent movies. If you have a poster of a dolphin next to a poster of Scarface, you might be a future serial killer.
For example:
Girls like animals…
Guys like animals humping…
Girls like the beach…
Guys like Kate Upton on a beach… (or anywhere)
Girls like Harry Potter…
Guys like The Godfaddah…
Girls like quotes…
Guys like quotes that matter…
There you have it. Choose wisely.