The act of aggressively masturbating.
To stroke your cock in a very enthusiastic way.
I could hear the dude in the next stall knuckle chucking .
Mark has been locked in his room knuckle chucking ever since getting home from the strippers.
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A dickhead who likes to invade everyones privacy and will happily eat cock whenever is possible. He/She talks too much and needs to be sent to South Africa to drop him/herself on his/her own head. They talk out their ass most of the time.
Look at Jackson, he's a Fuck Knuckle. Send him to India to eat rubbish. Pog.
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A term used to describe having to fight someone with no other options left
"There were 3 or 4 guys that had me backed into a corner so I had to go the knuckles to get out of there"
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The art of inserting ones toe up whatever orifice, all the way up to the hilt
Shit me mate......he stuck his toe right up to my tonsils - the dirty low down foot knuckling son of a bitch
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The act of pinching one's scrotum between the fingers so a testicle is forced out between the knuckles, resulting in an apparent swollen knuckle.
Dude, I think I broke my finger. (Looking down at Swollen Knuckle) No wait, its just my testicle.
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When 2 girls are each on their period and scissor each other.
Jen and Pam were both on the rag, and horned up for eachother, so they got into scissor position and bumped the bloody knuckle.
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Yet another fine euphemism for the vagina.
I wouldn't fuck her stink knuckle with YOUR dick and blame it on Hugh Grant.
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