1 definition by Lucifer Grammaticus

A bag, preferably plastic, that your porn addicted roommate skeets (or jizzes) into while you're away and then reuses for 3 days and you discover when you're looking for a place to throw your apple core away and end up with your roommate's skeet all over your hand.

*He eventually throws said bag away when his family comes to visit, while they are in the room.
"Dude, is that a jizz bag in the middle of your floor? That shit is gross. WTF is wrong with you? You should just do that shit in the shower."
by Lucifer Grammaticus October 31, 2007
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