As defined by RTFQ:
"Executed correctly, a dance-off is a beautiful way to underline humanityâ€™s mastery of music, form, style and, in extremis, Kung Fu. It can be a mating ritual, a non-violent duel or simply a celebration. Itâ€™s especially useful when dealing with lairy women when a swift punch in the ovaries is socially unacceptable."
For full details see: Dance Off