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1.
A girl who has serious bladder control issues, and on one occasion has been known to piss on her own tits after falling in a bathroom. She also regularly pisses herself in public places.
Person 1: "What is that pool of liquid on the chair in the kitchen?"
Person 2: "Pisstits was laughing too hard"
Person 1: "I am NOT clearing that up!"
by Beejyging November 28, 2012
 
2.
A pregnant woman's breasts that secrete milk for non-consumption.
Jen's piss tits drip all over the bed when I grab them.
by Coron the Almighty January 26, 2009