Bruce Lee made numchux famous in Enter The Dragon and Return Of The Dragon. Then he spun a pair overhead, creating the first human powered helicopter, and flew up to Heaven because God wanted to learn Jeet Kune Do.
A device that Napolian in the movie Naplian Dynamite has mad ninja skills with.
Sorry this definition sucks, but it's the wee hours in the morning on january first, and i have nothing beter to do. Someone should kick my ass with numchucks. that'd teach me.