2 definitions by L1feLus7

Top Definition
The act of fisting a girl when she's on her period.
I gave the missus a crimson knuckle-fuck last night.... it got messy.
by L1feLus7 April 01, 2009
The act of sexy punching (fisting).
Margaret, come here. I wish to give you a knuckle-fuck
by L1feLus7 December 03, 2009

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