Uncle Duncan's Dirty Diver
When you engauge in anal intercourse with a female and you pull out your member and you notice she left you a present sitting inside your pee hole.
Guy 1 "dude she let me do her in the poopshoot for the first time!"
Guy 2 "Oh yea how was it man?"
Guy 1 "great besides the fact she left me with an Uncle Duncan's Dirty Diver"
Guy 2 "Oh yea how was it man?"
Guy 1 "great besides the fact she left me with an Uncle Duncan's Dirty Diver"