I.F.O.F.F. 

International Federation Of Father Fuckers.
See Fatherfucker
People into Rap/Hip Hop seem to get really annoyed when someone says Fatherfucker. Not any more offensive than the term Motherfucker

Are the Mother Fuckers ready for the Father Fuckers - a line from the Album "FatherFucker" by Peaches.

I.F.O.F.F. by Spotsaneed June 14, 2004

F.I.F.O. 

First In First Out, as to beat the crowd.

I want to be F.I.F.O. at the big sale in the mall.

F.I.F.O. by Ciro Damalio November 13, 2007

F.I.F.O. 

To be the first one at a event and the first to leave.

I want to be F.I.F.O. at the mall tomorrow, I hate crowds.

F.I.F.O. by Ciro D'amalio December 5, 2007

F.I.O.F.O 

F it
I n
O r
F uck
O ff

Some people around here need to F.I.O.F.O !

F.I.O.F.O by Magician May 19, 2006

T.I.F.R.Y.B.F.W.N.S.F.B.W.Y.T.M.O.T.M.F.S.W.Y.T.D.W.R.A.B.F.B.O.L.B.A.I.C.U.T.A.I.G.B.T.F.O.Y.B 

This is for Rachel you big fat white nasty smelling fat bitch why you took me off the motherfucking schedule with your trifflin dirty white racist ass you big fat oompa loompa ass bitch i’m coming up there and i’m going to beat the fuck out of you bitch

Karen: Where is your manager?
Manager: T.I.F.R.Y.B.F.W.N.S.F.B.W.Y.T.M.O.T.M.F.S.W.Y.T.D.W.R.A.B.F.B.O.L.B.A.I.C.U.T.A.I.G.B.T.F.O.Y.B

T.I.F.R.Y.B.F.W.N.S.F.B.W.Y.T.M.O.T.M.F.S.W.Y.T.D.W.R.A.B.F.B.O.L.B.A.I.C.U.T.A.I.G.B.T.F.O.Y.B by Yellow Hearts 223 January 15, 2020

R.O.F.L.S.H.T.E.T.I.G.U.I.F.D.A.T.H.M.H.O.A.T.A. M.M.H.T.T.M.T.T.H.A.B.I.L 

rolling on the floor laughing so hard that every time i got up i fell down again then hit my head on a table and my mom
had to take me to the hospital all because i laughed.

The other day I was R.O.F.L.S.H.T.E.T.I.G.U.I.F.D.A.T.H.M.H.O.A.T.A. M.M.H.T.T.M.T.T.H.A.B.I.L ... it was kind of embarrassing.

R.O.F.L.S.H.T.E.T.I.G.U.I.F.D.A.T.H.M.H.O.A.T.A. M.M.H.T.T.M.T.T.H.A.B.I.L by Omnibender February 22, 2011

I.F.O 

Identified Flying Object, such as a plane, or hot air balloon. Things that can easily be identified in the air.

Nobody seemed to care that Jim caught an I.F.O on film.

I.F.O by Guacamullet October 27, 2014