Frat Rat

A putrid, dirty home wrecking whore that slithers their way into frat houses and fucks every dude in a five mile vicinity with no protection regardless if they have girlfriends or not.

Frat Boy 1: Do you know Grace?
Frat Boy 2: Oh, that Frat Rat? She's fucked & sucked every dude in the house, even the ones with girlfriends. She even ruined her boyfriend's previous relationship just to cheat again!
Frat Boy 1: Dirty Frat Rats.