Having financial difficulties.
Guy 1: What's up with that $1.38 you owe me from yesterday?

Guy 2: Damn, you on your knuckles like that, cuz?
by Groucheaux August 02, 2010
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When you see an attractive girl, out of sheer frustration all you can do is bite down on your knuckles.
Mate that bird is bite your knuckles
by Burger_king August 09, 2010
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Farting or getting raped in the ass by a large shemale.
Dude that one website you sent me to last night was digusting, I didn't know shemales could be Popping your butt knuckle.
by UF Omega September 12, 2011
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Glaze your knuckles Means when a guy masturbates , Jacks Off Rubs One Out
1) Glaze your knuckles is when a guy masturbates. 2)Scott- I love to glaze my knuckles. 3)Stop glazing your knuckles so much loser.
by Lala Loopsy 1995 December 19, 2017
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