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A play on words derived from senator Barack Obama's last name (Obama, pronounced (o-bom-uh).
Used to express liking for something.
Damn, that food was O-Bomba
by Richard D. Dastardly November 22, 2007
Used to insult Barack Obama if he decides to bomb people when he becomes President of the United States.
I used to like Obomba, but now I think he is crazy.
by Chase Spell February 11, 2008