Definitions by Lil Lori

dummin' 

to act stupid , wild , crazy. Basically going insane usually during dancing (crump dancing) in a positive way !!!

Misha: Go Zane, go Zane! Yo he's is killin' it right now!

Mika: Fa sho, he dummin' it with them moves.

dummin' by Lil Lori June 11, 2006