1 definition by UNIMAGINABLE21

Top Definition
When a Frat Boy screws up, so much so, that his brothers wouldn't want to claim him.
Girl 1: "Did you see Johnny totally frat boy fail last night?"

Girl 2: "Yeah, he puked in the bar. What a light weight!"
by UNIMAGINABLE21 December 17, 2009

Mug icon
Buy a Frat Boy Fail mug!