Mr. Potato Head is a children's toy inexplicably popular in the United States and possibly elsewhere. The basic toy consists of a misshappen lump of brownish plastic that is supposed to resemble a potato and a whole lot of little plastic eyes, ears, mouths, mustaches, hats, and whatever else one would reasonably find on someone's head.

The child playing with the toy is supposed to assemble the pieces into a face on the plastic 'potato' (which, rumour has it, once actually was a real potato, until some famine or something similar) so that they resemble a face of some sort. Theoretically, with a large enough number of pieces, Mr. Potato Head could have a nearly infinite variety of faces, thus making him the ultimate super spy. Unfortunately, children usually just spend their time playing with this master of disguise putting the eyes in the mouth slot, or similar actions, producing a face similar to something Picasso painted, which is quite amusing for anyone under the age of 8 or so, but of little use to the intelligence community.