What is Rusty Knee?
1.
the stain on your pants left behind when you get a lap dance from a stripper who's on her period
Candy at the Gold Club gave me a rusty knee last night and ruined my cotton dockers
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2.
The stain on your pants left when you get a lap dance from a stipper on her period
That dancer at Centerfolds gave me a rusty knee and ruined my khakis.
See