The person(s) on the set of an adult film whose sole purpose is to clean up any stray male ejaculate (i.e. jizz) that happens to have hit the floor or furniture
My friend's dad was the jizz mopper for The Hedgehog's last film.
quasi-criminal offense frequently enforced by cops in crowded areas such as concerts and sports events by stating "move it along ..there's nothing to see here...."
Before Paul got a chance to see what was going on he was charged with "mopery with intent to gawk"