Once, in a bar, two macho types (the way I first heard it, they were actually Mexicans, with appropriate accents) were boasting that theirs was bigger, and at length one of them pointed at a cat & bet that his was longer than the cat's tail. The bartender produced a ruler & measured the cat's tail. But when he got to the man, "Just a moment", the man protested, "Where did you measure than cat's tail *from*?" "From the asshole." "Well, kindly do me the same favor."