While in the act of anal intercourse, the penis slips out alowing a small compact piece of feces to slide out of the rectum and onto the floor. The male in this situation would then toss that muddy potato to an unknown undisclosed location
Doug tossed that muddy potato behind sharrons bed like it was never there and kept on gettin it. This is known as the muddy potato toss.
by Potato scooper October 31, 2013