When a guy jacks off and gets semen on a stain-able surface, such as leather or shirt material.
Dude I totally had a jizz stain on my pants today at school and I didn't even notice.
by Brony69 November 29, 2011
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1. A visible stain left by semen on an object
2. An insult for an undesirable person
1. Jessica had a jizz stain on her dress
2. Anthony is such a jizz stain
by ferty20 October 19, 2005
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