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1. Knuckle Sludge
Extending one's finger and ramming said digit into the anus until the knuckle reaches the rectum.
Nothing beats reruns of "Welcome Back Kotter" and gettin' the ole' Knuckle Sludge.
buy knuckle sludge mugs & shirts
sludge knuckle sluckle the funger vitamin a injection popsicle stickin'
by Tony Rosenstein Mar 21, 2006 add a video
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