Simpsons, 'Treehouse of Horror XIII'

A world in which Homer finds a magic hammock that creates clones of whoever lies in it. Homer creates clones to do all the chores and work so he can goof off. One of the clones kills Flanders so Homer decides to get rid of the clones and the hammock, abandoning them by the side of the road. The clones begin to make more clones, which march on Springfield while eating everything in site. Moe's, however, reports booming business. Eventually, the clones are lured over a cliff by a helicopters carrying giant donuts. It is later revealed that the original Homer was the first one over the cliff and a clone is living with Marge.