Poosie(Poo-see) comes from the word pussy, vagina, twat, cunt, cooter, ect ect. The differnce is that Poosie is a really nice pussy.
I roxxed her poosie.
by Syntek March 18, 2005
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Another word or nickname for PUSSY duh
Beyonces pussy
by Meredith April 23, 2004
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a silent fart that smells really bad; a vagina
Bill let out a stank poosie
by da ma October 3, 2003
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A poosy is when you stick your dick inside a girls arsehole and get juice all over your dick and then stick it back in her pussy - voilà you've made a poosy!
Hey Josh bro, how was your night last night?

Amazing bro! I gave her a poosy!
by Poosymonster December 30, 2020
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A combination of the words "poo" and "pussy" to form one word relating the use of the asshole as a pussy. Often, but not necessarily always, used in the case of a mtf transsexual.
I think I broke her ass-hymen, her poosy was bleeding all over me last night.
by The Nagus June 21, 2011
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Weaksauce; lame; another saying for pusseh (more "O's" after the "p"= extra poosiness)
Harry is a poosi!!
POOOOOSI
by Kdawgizzle August 30, 2006
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the plural form of "pussy" or a very funny word. pronounced POO- S- I
"well! her poosi sure was good last night!"
by Sally Slade :] December 6, 2007
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