O.S.F. 

Referring to the One Star Fairy in the CBS forums. An O.S.F. is a Phaenomenon occurence in which every post is rated 1 star out of a possible 5. There is no actual member who is the O.S.F. it is just a speculated phantom. It is mainly associated in the NCIS forums.

I think the O.S.F. has been through here today.

or

The O.S.F. has landed.

O.S.F. by Random Sightings April 16, 2010

l.m.a.o.s.h.m.s.f.o.m.h.a.i.d.m.t. 

Laugh my ass off so hard my sombrero fell of my head and I dropped my taco.

Steven told a joke and Brenda replied with l.m.a.o.s.h.m.s.f.o.m.h.a.i.d.m.t.

And they all laughed! THE END!!!

l.m.a.o.s.h.m.s.f.o.m.h.a.i.d.m.t. by WeridGirl101 June 27, 2016

P.O.S.F.

a PIECE OF SHIT FAGGOT.A person who is so fuckin dumb and needs to realize how fucking stupid they are. this set of letters represent any person you know that is all of these terms bundled into one... P.O.S.F.

1.This fuckin loser Josh Ryan is a P.O.S.F.2.i know of a loser as low as that P.O.S.F.

P.O.S.F. by THE ARYAN KING October 6, 2008

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

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

R.A.B.G.A.F.B.A.N.B.B.B.H.F.S.F.S.O.M.A.Y.H.C.T.P.T.F.O.A.S.A.R.A.N 

Idk lol

"Your such a R.A.B.G.A.F.B.A.N.B.B.B.H.F.S.F.S.O.M.A.Y.H.C.T.P.T.F.O.A.S.A.R.A.N"
"Penis"

R.A.B.G.A.F.B.A.N.B.B.B.H.F.S.F.S.O.M.A.Y.H.C.T.P.T.F.O.A.S.A.R.A.N by anonymous April 15, 2022

S.F.W.F.C.S.S.O.B. 

Stinky Fingered Weasel Faced Cock Sucking Son Of A Bitch! That pretty much sums it up. Everyone has known at least one.

That guy just stole my girlfriend. He is a Stinky Fingered Cock Sucking Son Of A Bitch! S.F.W.F.C.S.S.O.B.

S.F.W.F.C.S.S.O.B. by Anjie Daddy May 11, 2011