When I was small my older brother and sister would slap their chests with limp wrists, walk pigeon-toed, contort their faces and say with limp tongues, "Thduuh-thduuh!"  They were pretending to be mentally retarded, convincingly and out in public (to humiliate our mother) and it always made me laugh.

There are comedy sketches about infertility treatments creating fetuses that fit in a spoon, homeless guys who build shelters out of cardboard and boogers, grandmas who get…