crumpin Share definition Flag a dance that started appearing in LA clubs, which was originally done by clowns (no lie!). it was popularized in the missy elliot video, "i'm really really hot." damn look at them kids crumpin on the floor. crumpin by tre September 11, 2004 Words you can keep railfan mug chonk mug chud mug based mug 67 mug slime mug mogging mug chopped mug thot mug glazing mug huzz mug yams mug larp mug unc mug cracked mug simp mug baddie mug bop mug lolcow mug