What is Poop-knuckle?
1.
The second knuckle in (heading towards the hand). Originating from the knuckle at which you stop at when inserting a digit into another's asshole.
Used to warm up/stretch out an asshole before anal sex.
I was playing ping-pong and the ball hit off my poop-knuckle.
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Random Words:
1.
The act of punching a someone in the ass so hard they have an instant assgasm but also cracking their pelvis
man, this delacy guy, he k..