The act of taking a poop, in which you know you pooped, however, there is nothing in the toilet bowl to flush except the bum wipe.
Mystery Poop is one of those unsolved mysteries.
by Poohzie May 27, 2009
to go into a freshly cleaned public restroom, dropping a fat deuce, not flushing, and exiting the restroom unidentified.
by TheMysteryPooper December 28, 2010
After performing the act of dropping a deuce, refers to the absence of leftover feces about the buttocks. Therefore, leaving nothing behind to wipe. It's a mystery.
by Long-Dong Silver September 16, 2008