F.U.N.S 

F.U.N.S stands for fucked up nigga shit.

Man, what you did yesterday was f.u.n.s

F.U.N.S by Thults April 10, 2007

F.U.N.G.U.S. 

fuck u new guy u suck

When the piliot first joined the navy his callsign was F.U.N.G.U.S.

F.U.N.G.U.S. by RAMBL3R100 July 6, 2008

F.U.N.K.A.S.S. 

Also known as the S.Q.U.I.R.T.S. defense council, F.U.N.K.A.S.S. (Foundation for the Understanding of New Knowledge About SQUIRTS Sufferers) is attempting to fight for a cure against the ailment known as SQUIRTS. They have just recently been formed and are trying to stop the prevention of death, which is caused by the disease of SQUIRTS.

If you want to know more about F.U.N.K.A.S.S. join the group on Facebook.

F.U.N.K.A.S.S. by F.U.N.K.A.S.S. February 23, 2011

S.N.U.F 

Saturday Night Ultimate Frisbee- only the elite allowed.

elite 1: hey your gonna S.N.U.F tomorrow right?
elite 2: hell yeah i'm gonna own that frisbee.

S.N.U.F by S.N.U.Feriffic May 13, 2010

S.N.U.F.F.Y 

shake it left and shake it right!

a: S.N.U.F.F.Y
b: shake it left and shake it right!

S.N.U.F.F.Y by figgy:)) November 16, 2023

S.N.A.F.U 

Situation Normal All Fucked Up

S.N.A.F.U by Phil September 20, 2003

S.N.A.F.U. 

Acronym for "Situation Normal, All Fucked Up" (or, more politely, "Situation Normal, All Fouled Up"). Most often used as a noun, referring to an unfortunate and possibly urgent situation.

Originated among American G.I.s during World War II. See also FUBAR.

It's going to take some quick thinking to get ourselves out of this SNAFU.

S.N.A.F.U. by Greenie December 11, 2003