(n) - The person responsible for or in the act of crap dusting. Often not held in high regard amongst co-workers, friends, or anyone. The crap duster generally makes life a little less pleasant for others. Mostly found in crowded elevators or shared cubicles.
"Damn Tom!!! Did you have be the crap duster in here? Godust somewhere else!!"
Not being able to leave your stall after taking a crap in a public bathroom as others are still in the bathroom. Usually over the fear of people knowing it was you that stunk up the whole room.
(Text) Friend: "Dude, where you at? Been waiting in the parking lot for 5 mins!" You: "Sorry man, I'm crap trapped. Should be able to exit soon."