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1.
omo
Meaning Oh My. Usually used by those who speak the Korean language or wannabe Koreans who watch Kdramas all day.
"Omo! Kim Hyun Jung and Geum Jandi kissed!!!11!1!1!"
by tpizzy August 06, 2009
 
2.
An emoticon depicting a Prawn from the popular 2009 movie 'District 9'.
MNU Agent 1: lol!

MNU Agent 2: wat?

MNU Agent 1: (OmO) <--- its a fookin prawn!
by youcantseemeintheseglasses April 15, 2010
 
3.
Paedophile
Loves Kids
Related to the term 'Oliver Moore'
Eurgh look theres a 12 year old with that O-Mo
by joshg653 March 17, 2009
 
4.
OMO
On my own

Used to reference having to do something or go somewhere by yourself.
(slacker friend): "dude, totally just got the over achiever as my partner for the history project."
(you): "yeah there wasn't anyone left in my class so looks like I am OMO again..."

Or

(you): "dude Chelsea just asked duke to the dance!"
(best friend): "that sucks! Guess your goin OMO again."
by Hurdledrive February 12, 2013
 
5.
The cockney pronunciation of homo.
"Well what 'ave we 'ere?
Looks like we 'ave us a 'omo"

'oy loook at the litt-le 'omo"
by let's go smoke some fags June 08, 2005
 
6.
OMO
OH MY OPRAH; used instead of OMG (oh my god)
OMO did you hear what happened? OMO I love it! OMO I can't believe that! OMO have your heard that song? OMO have you seen Celine Dion in concert? OMO have you seen The Hangover? Mainly used for dramatic purposes.
by xaviersrealm May 22, 2011
 
7.
omo
An awful name for any kind of database.
"I'll just check the omo."

No. Rubbish.
by PriMedic November 20, 2007