oo 

a sound in which a person or a crowd makes when a person gets in trouble

David got ooed when the teacher asked to talk with him

oo by RomeTwinn March 31, 2017

.oO(...)

A classic ASCII art thought bubble as found in comics, also comes in shortened forms:

.o(thought)

oO(idea)
.O(eureka)
o(really?)
.(hmm)

… and can contain other ASCII art instead of text.

— I really like you! .oO(LOVE)
— Yeah, me too .oO(...)

.oO(...) by Crissov August 13, 2016

OO 

A surprised face.For best effect, add a period between the two o's for a nose.

"I just humped a car*
"OO..."

OO by Brian November 27, 2003

Oo 

Another face used on the computer, Looking like: "O.o" But with out the '.'

What the fuck was that? Oo;;

Oo by PopPoochan! May 25, 2005

oo 

in computer science oo is short for object oriented

OO Software Development

oo by arikato February 7, 2008

oo 

an interjection used to express surpise, frustration, pleasure, admiration, or awe

oo you touched my tralala.

oo by papermachete December 28, 2005

OO 

OO (pronounced Oh Oh) - Owner Operator (otherwise known as a wanker)

You are such an OO! (you are such a wanker)

OO by MeriAnn February 29, 2008