A combination of "lol" and "!!". It's used to express laughter and excitement at the same time. Also can be used just as an emphasized "lol".
"Dude, my night class is canceled because my professor got a nasty hangover from a student party he went to the other night, so now I can come out tonight!"

"!o!, that is awesome man!"

or

"Ahh, my mom canceled my xbox live account!!!"

"!o!, sucks to be you!"
by Slinky O October 27, 2009
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An emoticon used to indicate the person is blushing, embarassed, etc.
person 1: zomg, do you really like him?!
person 2: um.. o////o
by dfskdshjdsahdsa April 12, 2006
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A face, similar to ^//^ and/or >//< . The o//o is a blushing face, however the eyes are open in shock or disbelief. This is not usually used as a positive way of blushing, such as ^//^ would be. o//o is usually used when someone is embarrassed or surprised.
Mom: I threw you a surprise birthday party, and invited all your friends, but they only had bright pink balloons

Me: o//o
by Sharp131313 November 5, 2013
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Average (o)(o)
Cold breasts (^)(^)
Nippels De Grande(O)(O)
Breast Implants (@)(@)
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music

it is someone with headphones on listening to music and enjoying it.
o(-. -)o: don't bother me i like this song.
by myfirstdeadpanda July 16, 2008
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(post embarrasing picture somewhere)

you: aahh take it down O///O
by chiste March 23, 2011
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