A fork of Rural Dictionary
During the sexual act of 69ing, while the girl is on top being pleasured by the male she then poops on the males face/mouth. It can either be planned or not. This word can also be used as a filler when you have nothing else to say. It is definitely a party pleaser.
"Hey Jack how was your date last night?" "Hey man, It was going great until she Poopty Nined me." " Uhhhh Gross man!" "Babe get in here! I want a Poopty Nine the crap out of you! Literally!"