While performing vaginal intercourse with your partner. Your partner has anal discharge resulting in debris being left on your scrotum.
Like when your woman has a bunch of immodium before going to bed..and you wanna get busy..ya end up with a set of rusty nickels.

"Last night my lady had a major case of the shits, dude I ended up with a pair of rusty nickels."
by pickles37 November 30, 2007
5 Words related to rusty nickels

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