Definitions by Rose Michaels

b.y.o.s.f. 

Bring You Own Single Friend is a new trend in parties - bringing a single friend to a party that you're not interested in

Did you hear about the party? The invites say B.Y.O.S.F., so why don't you bring your hot roommate?

b.y.o.s.f. by Rose Michaels December 5, 2013