ooga booga /ˌuːɡəˈbuːɡə/ exclamation6 •(slang) A frightened or sarcastic imitation of foreign language. •(slang, humorous) Mimicking caveman speech. •(slang, humorous) Mimicking ape-like behavior. •(slang, offensive) Mimicking African languages. •(slang, offensive) Mimicking Aboriginal Australian languages. •(slang, offensive) Used to suggest that the interlocutor is stupid.