When said person is being annoying or is being a headass
Person 1: “God, Michael is being such a fuck knuckle”
Person 2: “You can say that again”
Someone who is a complete and utter idiot.
1. Don't be such a fuck knuckle.
2. That fuck knuckle crossed the highway without looking.
3. If you're going to be a fuck knuckle, you can piss off.
Look up Donald Trump on Google if you are unfamiliar. (Absolute retarded fuckwit cockhead).
when you punch a nigga real hard!
guy1: yo where is dan?
guy2: he got suspended because he got into a fight that man pulled a knuckle buster on that man!
While in spoon position with your partner, you put your pinky in the Booty hole, ring and middle fingers in the vagina, and use your pointer finger to stimulate the clitoris.
Whether my wife is being naughty or nice, I always end the night with a knuckle buster.
Red neck version of saying knuggies/ nuggies ( when you put your hand into a fist like shape and take your knuckles and scratch one’s head)
You want a knuckle bob?
When a person is so fat, you can’t even see their knuckles from how fat their hands are.
Tom: check out my new finger tat
Dave: nice meat knuckles fatass