O: 

A very surprised smiley face

I can't believe it O:

O: by Linkzie June 29, 2006

O: 

getting sick
definition of my own, using as an unacceptable answer for :O

too much crazy comments O:

O: by Chwist September 13, 2004

O: 

The look of surprise your girlfriend gives you when she sees that smile pp

Her: O:
Me: what?
Her: my what a small pp

O: by Smollppman November 2, 2020

\o/ 

A smiley of a cheering guy throwing his hands in the air, expressing great happiness. In a rare case, it can portray someone throwing his hands in the air in exasperation or panic.

1. YES! My new computer has arrived! \o/

2. Dammit, I have loads of work to do and tomorrow's the deadline! \o/

\o/ by Fluid August 26, 2003

O 

The letter fucking o. Are you that bored?
Or you just smashed your keyboard but only a o cane out?

Pee pee POO POO

O by 🙇‍♀️🙇‍♀️🙇‍♀️ October 15, 2019

O 

Something someone says when they're too lazy to type "Oh".

Person 1: Sorry man I can't go to your birthday.
Person 2: O

O by DylanPaterson July 7, 2019

:o 

The act / face of being surprised.

OMG I didn't know he did that! :O

:o by Jak Dude May 5, 2005