O.o 

A face you use to stand for when you are puzzled or baffled.

Did you know that it is illegal to go trick-or-treating on a Sunday in Deleware? O.o

O.o by lunar shadows October 31, 2004

O.T.F 

Only. The. Fam. originated out of Bayside

A crew started by Koray Oral or Killa K. His crew includes Big V, C-twizz, P.C., Ace, Lo Dogg, T-Money, and Mike Gunz. His crew controls 203rd street. O.T.F. was formed out of a Blood set called MMP

O.T.F by EaStSidE May 3, 2005

O.H.B. 

Acronym for One Hot Bitch. Also, it is a hard rock song by the band Racer X from the Superheroes album (2000).

Damn, that's an O.H.B. over there...

O.H.B. by amdjunkie064 September 27, 2010

O.I.L. 

Operation Iraqi Leberation

We need O.I.L

O.I.L. by Kevin2Stupid May 9, 2003

o yeah 

The koolaid guy! OOOOO YEEEAAAAHH!!

That damn koolaid guy broke down my wall. Ima sue his ass.

o yeah by Double D January 19, 2005

O-girl

n. An Orthodox (Jewish) girl. These chicks drive secular guys crazy because of the alluring appeal of their perceived innocence. Synonyms include dox, nash and denim skirt.

"Damn, i wish i could get some of that O-girl action!"

O-girl by The Raging Bull February 20, 2005

o_0;

a look of shock or bewilderment, the ; represents a sweat drop

i accidentally put a whole in the roof o_0;

o_0; by keiko August 19, 2003