1 definition by Uncle chester the molester

Top Definition
the art of bending one over the knuckles (the things that hold the train togather) of a stopped train and screweing the shit out of them and finishing before the train takes off and kills you.
pam was looking good at work today so after work we went to the bar and ended up knuckle fucking.
by Uncle chester the molester March 02, 2009

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