When the urban hip-hop culture listens to "crunk" music, and starts to push eachother around in a manner just like a mosh pit.
Man dawg, that crunk pit was off tha chain!
Formed at rap concerts when a group of people act crazy and bounce around. It is quite similar to a moshpit
Moshpit- rock concerts
Crunkpit- rap concerts
Black guy: Yo dawg I crazy in da crunkpit last night.
White guy: Crunkpit? You mean moshpit?
Black guy: Nah man, you crazy white people knock the shit out of each other, in a crunkpit you cross your arms and bounce wit da beat.
Whit guy: Ah I see the difference.