bunga bungabun‧ga bun‧ga /ˌbʌŋɡə ˈbʌŋɡə/ noun [uncountable] 
an activity at a party, in which young women take off their clothes to entertain older men and may have sex with them: 
He denies holding bunga bunga parties on his yacht.
an activity at a party, in which young women take off their clothes to entertain older men and may have sex with them: He denies holding bunga bunga parties on his yacht.