1) the result of wankin' it in the shower; the jizz runs down your hand, and gets stuck to your knuckles
2) a very unintelligent individual, or someone who happens to have said something stupid in the recent past
1) Goddammit! I hate when I come to class and still have cum knuckles... should've cleaned those bitches after jackin' it this morning
2) "I thought baseball was only seven innings." "Shut up, cum knuckles."
The Ugandan cum knuckle is a sexual act where during sex you ask your partner if they "Know Da' Wae", and if they do not "Know Da' Wae" you punch them in the face with a fist full of CUM.
She didn't Know Da' Wae, so i gave her the old Ugandan Cum Knuckle.
-A slang word for what happens to your knuckle hair after not washing your hands well after doing a certain something.
Can be embarrassing when you first notice your cumknuckle condition and your in public
- Can also be used as a name to call someone who is being dumb, a jerk, or annoying.
- "I noticed I had bad cumknuckle after my shower and had to rewash my hands before going out"