It just caught me by surprise, I never saw anything like that. The conversation with my wife went something like this:

ME: "What the fuck is this foolishness?"
Wife: "They're dancing, it's called Krumping."
M: "Krumping?"
W: "Yes, Krumping"
M: "Not Krunkinging or getting Krunk, but krumping"
W: "Yes, that's what I said"
M: "Krump...like the krumpetts I get from the store...krump?"
W: "Yes...GEEZ!!! You don't fuckin listen!"
M: "Calm down Sachemo, I just wanted to make sure I heard it right. Damn kids these days...krumping..."

And to Owls point, yeah, they could be doing other things besides dancing, so thank God for that.

I dunno...sometimes these reality shows crack me up. I only like the beginning episodes when they show all the rejects. Once they get all serious, it gets boring for me.

But yea, if you google for 'krumping' there are all kinds of sites and forums dedicated to this...art...