-.O 

A face to express annoyance, sarcasm, or frustation. It can fit many situations, really.

It is a sort of wink but more of an angry/annoyed wink; not a flirtatious wink. It can be kind of a way of making the other person feel like an idiot when they don't know what they're talking about or state something obvious or even false. The user can be implying they know something the other person(s) does not.

A: "Hawhaw! You're short." <-Idiot
B: "Naw. -.O" <-Sarcasm
or
A: "Omgigawd! I'm so cool. :]"
B: "-.O Mhm, sure you are."

-.O by Luna o_o February 23, 2009

"o" 

A character in a famous bondage erotica story about a girl named "O" whose lover turns her over to another man for bondage slave training.

Most people in the bondage subculture have heard of the story of "O"

"o" by naughty kitten August 7, 2004

;-O 

you shot a wad in my eye

"hey baby, let me cum on your face"
;-O AUGH!!
"oh no! I'm sorry!"

;-O by miss elizabeth November 9, 2008

-o-

A mid-word contraction for "of a". Used to make bad situations seem more funny.

"Waste-o-time"

"Waste-o-nuke"

-o- by Evan May June 7, 2005

;O 

pervy wink, to be used whenever you want to make something sound really pervy. oh ye and ;O© IT'S MINE!!!!!

pervy wink knows where you live ;O©

;O by pervy wink ;O emoticon May 18, 2011

(_O_) 

n. text representation of an open or gaped asshole. Also a pussy that has been stretched.

Girl after a night with me you'll go from (_|_) to (_O_) because of my huge dong!

(_O_) by E. Hughes December 13, 2008

O'---- 

An expression showing a bong.

Mike - "Hey Drewski do you want to go hit that O'----"
Drewski - "sure thing mike!"

O'---- by Drewskis July 3, 2009