The act of sitting on the couch and being in such a state that even theories regarding cosmology and engaging pastimes, such as fencing, lose their appeal in lieu of induced TV coma, abnormal snacking and fantastically long power naps.
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.