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.
Rare, red monsters that hide in forest, or a name to call "ugly" people when you want to joke around. Oogoley Boogoleys are EXTREMELY rare if you find one make sure to take a photo!