http://www.urbandictionary.com/define.php?term=momo
1. MOMO
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A generic insult used to describe one who is irritating, annoying, or an idiot. (synonyms include but are not limited too: ass, asshole, bastard, bitch, blockhead, bonehead, cocksucker, dick, dickhead, dolt, dope, dunce, fool, halfwit, idiot, imbecile, jackass, jerk, mother-fucker, nincompoop, ninny, nitwit, numskull, rascal, scamp, schmo, schmuck, simpleton, son of a bitch, tomfool, twerp)
1. If someone is driving badly, one might say "Hey momo! Learn to drive!"
2. If a loud crow outside your window wakes you up, you might say "God! Shut up stupid momo bird!"