What is Poop Knuckle?
1.
A place on a poop where it is thicker than elsewhere on the poop.
Sorry I took so long in the can; I got stuck on a poop knuckle and it took a while to force it out.
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2.
The point to which poop comes up the shaft of the penis after having anal sex with someone who didnt "clear themselves" before hand.
Damnit carl, you forgot again?! This poop knuckle has to be at least four inches...this time your cleaning it.
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3.
The result of an improper angle of approach when wiping your ass from a particularly messy poop-session. Poop gets on your knuckle. Usually occurs when you lift a cheek to the side and attempt a wipe.
Steve liked to lean to the left when he wiped his ass. This often resulted in a nasty case of poop knuckle.
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