1. a term used to describe sharting (farting but shit accidentally comes out) while dancing at the Florabama (famous bar on the Alabama/Florida border) usually caused by bushwackers or any other milk-based drink. Usually requires a "back it up" style dance in order to try to save yourself.
That guy had 3bushwackers and is shancing all over the place.....get him out of here.
The act of stabbing someone with a shank. Comes from the word shank which is a crude knife usually made in prison, a homemade knife-like weapon usually made from a spoon.