To manage to fall and/or faceplant while busting a move
The drunk girl chenned while on the dance floor
The kid at camp chenned while he tried to challenge another to a break dance on sandy pavement
To chen may cause embarrassment to someone who thinks that they are a good dancer
(N): Being constantly constipated; always having to poop but never being able to.
"Honey, you better start taking some pepto bismo for your constantipation"