Most houses have them. They're good at hiding, so you may not see them, but those "in the know" watch for telltale signs of their presence. Food vanishing out of packages. Objects toppling off shelves onto the cat. The TV spontaneously turning on at all hours of the night. These are the signs of a serious Munchkin infestation.

Munchkins are little people (two inches in height) who hide in humans' houses and worship the Great Glowy Box (your television set). Your average Munchkin has no greater ambition than to lie on a couch before the Great Glowy Box and soak in its divine commands. An intensely ambitious and generally intelligent Munchkin might wish to sip some warm, flat beer while doing so. But aside from that, they're really not very much like humans at all.

Unfortunately, Munchkins, not being the brightest of God's creations, don't understand English or any other human language. Which makes their comprehension of the demands of the Great Glowy Box limited at best.

And humans seem to have some inexplicable aversion to Munchkins, which even that terminally dull-witted race has eventually caught onto, so they find they must interrupt their Glowy Box viewing to scurry away from humans and hide. This annoys Munchkins to all end, and they view humans as the greatest of evil demons.

Cats are a close second.

Ideally, a Munchkin would like to drive the Humans (and their annoying pets) out of a house, that they might have it to themselves and enjoy the Great Glowy Box uninterrupted.

(Those few Munchkins who have accomplished this lofty goal have not caught onto the fact that the power to the house tends to get cut a few days afterwards).