Something so outrageously disgusting and stupid, its been banned in some countries. (OK not really) You can use it as an insult, but only if the person REALLY REALLY deserves it.
Person #1- Man that guy was such an oofoo!
Person #2- Woh man, don't you think that's a little harsh??
Often said in a fit of anger and/or frustration when attempting to yell "Goof!" An Oogoo is an idiotic, senseless individual who tends to be completely oblivious of their surroundings, and profoundly lacks all spatial awareness.