Over-sexed Rugsuckers from Mars

Tiny Martians use Earth as a laboratory to try out new life forms. They return after ten million years only to find that the human experiment is a complete failure. They decide to mate a human with a vacuum cleaner to create a species that will be better at cleaning up after itself, but a programming error by a drunken Martian sends the oversexed cleaner on a wild rampage of rape, murder and overall bad manners.