Definitions by Gigusmaster

Cosby sweat 

Very similar to Cosby sweater only you vomit on your partners asshole.

Joe shmo: Oh yeah man, i totally puked on her asshole, and it looked fucking hilarious with all of those bright fruity colors.

bill bob: dude, cosby sweat sounds fucked, kind of like 2 girls 1 cup.

Cosby sweat by Gigusmaster December 2, 2009