Frat groupie: a girl who shows obvious favoritism towards a specific fraternity. Here is how you can tell if you are one.

You are the first girls to arrive to every one of their parties.

....and the last to leave.

You act as if their pledges are your own.

You find yourself wearing more frat apparel than your own sorority.

You are genuinely offended when you learn that one of the brothers (probably a pledge) doesn't know who you are.

When you and your friends say you are going out, there is no question about where you are going -- even after the "maybe we should branch out" 15- minute joke conversation.

Dating one of them would be borderline incest.

You know things you definitely should not know.

The guys are comfortable enough to talk about recent hook ups in front of you.

You have given yourself free reign of the fridge.

The guys have seen you at your absolute worse, but you could care less.

You are completely comfortable just crashing at the house.

You have helped them make decisions for their party -- theme, what alcohol to buy, what to wear, etc..

Basically, a walking billboard to rush their fraternity, you have probably done some pre-recruiting yourself.

You are genuinely confused as to why you have not formally received a bid yet.

You know the wi-fi password to their party house.

You know them all -- by name, nickname, and last name.

You have frat-friends -- friends you have made because they are always at the same frat, too -- that you probably met in the bathroom.

You cannot wait to post-game for all the random girls to leave.

You and your friends have acknowledged you are all groupies.