Definitions by Cornelius B.

s.t.f.u.y.p.o.s.

an aggresive term used mainly online and for texting meaning Shut The Fuck Up You Piece Of Shit!

after multiple text messges, the girl became annoyed and texted the sender back, saying "S.T.F.U.Y.P.O.S.!"

s.t.f.u.y.p.o.s. by Cornelius B. April 12, 2008