Poo goo
When you stick your finger into your butt and wiggle it around ,pull it out and there is something on it that you can't see but you can smell,thats poo goo.Also known as potent aphrodisiac when held under subjects nose.
I PUT MY FINGER IN MY BUTT,PULLED IT OUT AND HAD POO GOO ON IT.I COULDN'T SEE IT BUT I COULD SURE SMELL IT.