Top Definition
When the cum of a girl has blood in it. Usually happens before or after her period
Guyone: "Dude, did you f*ck Katie last night?"
Guytwo: "Yea but she had dirty cum, it stained my f*cking sheets, man!"
Guyone: "That's F*CKING NASTY!"
by brynnger November 01, 2008

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