Know someone who just doesn't need to reproduce? Reduce their chances with the Sign of the Mule, made by giving the "hang ten" sign with the ring, middle, and forefingers pointing foward. Touch the top of the person's head (never tried on a female, but i've used it on a male and it had an added bonus....he went from "pimpdaddy" to social outcast. Women would have nothing to do with him any more, and men mocked him. I assume it continues to this
day), and say a word representing "you will bear no fruit" three times.