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!"
The Urban Dictionary Mug
One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.
Buy the mug