oo oo aa aa /ˈʔuːʔuː ˈʔɑːʔɑː/ exclamation1 •Used to represent the sound of a monkey's cry.The minute I start eating, two lads I can only describe as retards on Prozac started making monkey calls and picking on me. ‘Oo oo aa aa, hey monkey man, want a banana?’ Said one of them. — 2011