1) When a girl has an infected clitoris piercing

2) A clit that has not been 'used' in awhile causing the natural iron in the blood to oxidize, which cause the clitoris to turn a red rusty color
Dude I was fucking this girl last night and she had such a rusty clit. It was nasty!
by Gio's Rusty Clit October 25, 2018
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