O.F. 

I came up with this in the late 70's. An O.F. is an occasional fuck. Someone you have no real interest in because every time they opened their mouth nothing but stupid came out. But they were gorgeous, good in bed, but absolutely not to be seen in public with.

Please do not tell me that I saw you with him at the Elbow Room last night. I know that you were snot slinging drunk, but he's your fucking O.F. for Christ's sake!

O.F. by snarkyb. February 17, 2013

o rry 

The way the Chinese say "O rly".

Student#1: My teacher is hot.
Student#2: O RRY?

o rry by hai guyz February 7, 2006

O bag 

When a girl t bag's someone. It is the female equivalent.

I was playing Call of Duty 3 this weekend and I o bagged the shit out of these guys "said by Katelyn"

O bag by Mounds View November 8, 2007

O'Beast 

A funny way of saying someone is severely over weight, or morbidly obese.

Bob: "Holy shit! You see that woman over there?"
John: "Yeah, she's o'beast!"

O'Beast by TweedleD January 2, 2009

O.L.O.Y 

Only Losers Obey Yolo

" Hey dude let's go get drunk "
" why? "
" YOLO "
" Dude, O.L.O.Y "

O.L.O.Y by Philenmyself July 7, 2012

o-stika 

The Obama symbol, a blue doughnut dipped in peppermint that adorns campaign signs , buttons, et cetera.

that hybrid has like 20 O-stika stickers on it.

o-stika by goobbleglop November 3, 2008

O.F.P.D. 

"Offending Fathers, Pleasing Daughters"
A guy who girls love but their fathers loathe

Ashton Kutcher in "Guess Who" is an O.F.P.D.

O.F.P.D. by Ivins Militia August 10, 2009