The Zombie Mask
While getting head from your favorite, unsuspecting, trash-barrel whore, tell her you want her to look right up at you with those "pretty little eyes" when you blow your load. Then, just when you're ready to spew a good weeks worth of goo, blast that hefty load in both eyes. This temporary state of blindness will produce the zombie effect as she stumbles around the room with arms outstretched, and moaning like the walking dead.