Dance has been a part of life and culture in some way since history was written. Dancing is mentioned in the bible. It is a part of traditions and rituals practically everywhere you go on earth. It's pretty difficult to say exactly when the first dance occurred and who started it.
I don't know but he must have received some funny looks. "So I have this idea. You just sorta... wiggle and thrust randomly to music. It's fun, see?" *awkwardly wiggles and thrusts while everyone just watches*