After pooping, the extra remaining goo coming out of your ass.
When I stood up, a string of poop juice followed.
An expression.Could be used in a sentence of any kind.
Shanquakapakaka was drunk and fell in the gutter and exclaimed "That's some poop juice,damn!"
Juice in which is mixed with a fart at the butthole area.
My daughter was very concerned as she farted "poop juice" into her hand. And proceed to wipe on her jacket.