Wikipedia
'upa'upa
The upaupa (often written as upa upa) is a traditional dance from Tahiti. It was mentioned by European explorers, who described it as very indecent. It is not quite clear how similar the gestures at that time were with the now immensely popular tāmūrē. In both dances the performers form groups of pairs of a boy and a girl, dancing more or less in sexually oriented movements.