noun - a nasty, painful, and often hilarius fall.
Also a single vehicle accident such as hitting a guardrail in a car, flipping a motorcycle, or launching yourself over the handlebars of your pedalbike.
Yeah, my wrist is still fucked up from taking a shitter on that wet grass, but damn was it funny.
You know that first scene in Deuce Bigalow where the old lady has a shitter on the bus stairs? - Pure comic genius!
My ass is covered in road rash from pulling that shitter on my ten speed.