A peice of toilet paper that is hanging out of the back of your pants (above the waistline) after you have gone to the bathroom.
When Joe came out of the Mens room he had about a 12" ass comet hanging out of his pants.
by PeeVee1 September 15, 2006
the act of soiling a carpet by dragging one's ass across it
I have to clean up after my dog's ass comet
by Eyz June 03, 2007