your: Pussy, Vajayjay, or a really angry chick.
Ex.1: Guy "I shoved my cock into her pissy missy. it felt great."

Ex.2:Girl "God she was being such a pissy missy last night. all i wanted was my ice cream."
by Hary Melen January 19, 2009
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When a girl says she squirts. After a good pounding and climax, you realize pretty quickly by the smell, colour, and stain on the mattress, that it's piss. Not cum.
Guy : The broad from the bar? Yeah, I'm still airing out my bedroom! I had to buy new sheets! Bitch was a Pissy Missy!
by Brittle420 February 25, 2018
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