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.
by BGSC March 4, 2009
Get the poop knucklemug. When wiping the ass after an exceptionally productive poop, a knuckle is accidentally raked across the large, volcanic cone-shaped pile.
by padabo October 2, 2011
Get the poop knucklemug. 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.
by Bspot January 14, 2008
Get the Poop Knucklemug. 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.
Used to warm up/stretch out an asshole before anal sex.
by DMazzIV August 24, 2006
Get the poop-knucklemug. by skullfragment October 15, 2008
Get the Poop Knucklemug. sworn mortal enemy of the poop doodles this terribly violent group of pks will terrorize your home and dont get us started with poop knuckle trees the sub seqquent group also this group not aloud to speak agout fridges
by poopknuckletreeee June 17, 2022
Get the poop knucklemug.