chum knuckle

1. An idiot or moron
2. Someone who is clumsy.
Did you hear what she said? She is such a chum knuckle!
by XTO June 18, 2010
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Knuckle Chum

When you give yourself a hearty wank and bust a load all down your hand and fingers and fail to clean up the nut adequately leaving crusty jizz on the knuckles.
You might want to put a little hand lotion on your digits there braaaaaahhh. Skin looks a little dry and flakey. Naaaaaahhhh brooooohhhb that’s just knuckle chum. I didn’t wash my hand earlier after I gave it a good wank.
by Eaton Holgoode April 25, 2018
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