when anal fucking a girl, get deep enough to get a substantial amount of poo on the tip of your dick. then pull out and tell her to suck it like it contains the anti-serum. if your dong has enough poo on it, this should resemble some nasty skank enjoying a king size clark bar on a fine summer day.
"so...i was balls deep in this bitch and she yelled out Nick's name. so i pulled out and gave that ho a clark bar!"