Munchies is a 1987 comedy horror film starring Harvey Korman, Charlie Stratton, and Nadine Van der Velde.
Cecil Watterman, Simon's evil twin brother and snack food entrepreneur, kidnaps Arnold while Cindy and Paul are making out.
The Munchies begin operating the machinery and use it to cut themselves into pieces, multiplying themselves further, but Paul electrifies the assembly line with a cable, turning them to stone.
He proceeds to destroy their petrified remains and Cindy reveals herself from hiding, but as they are reunited, a lone Munchie presumed to be Arnold attacks Paul.
As Dr. Crowder drives off into the desert, ominous dark clouds circle overhead and lightning strikes the stone Munchie in the pickup bed.