Used to reference having to do something or go somewhere by yourself.
(you): "yeah there wasn't anyone left in my class so looks like I am OMO again..."
(you): "dude Chelsea just asked duke to the dance!"
(best friend): "that sucks! Guess your goin OMO again."
2. Emo music from Omaha's Saddle Creek Records
3. Emo music from Omaha's Conor Oberst(a/k/a Bright Eyes)
"No,OMO! Bright Eyes is playing at Roseland;I got an extra ticket. Wanna go?"
"I'm there, Dude!"