When you poop and then jack off and jizz into the same toilet bowl without flushing, also leaving pubes.
Jack left a polycum potion at Josy's last night...he's not getting invited back.
(Noun)
1. A shot glass filled with cum and a couple pubic hairs to be tossed back and swallowed after coitis
How would you like to taste my polycum potion?