The vagina of a female horse or other equine

Related to bussy (boy pussy, male anus), meaning mare pussy
Have you seen Apple Jack's mussy?
Rainbow Dash has the best mussy of all the ponies.
Aryanne's mussy is absolutely amazing.
by CummyWummyTummy August 26, 2021
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The backside of a man; a man's behind, butt, gluteus. Typically used in casual speak.
He has a fat mussy! His mussy is ovah!
by OWTFDWIT November 6, 2007
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Italian last name if you have that last name 99% sure your hot/sexy Mussi's achive there goals so your for sure want to hang out with a Mussi
Not a Mussi: Hey dude did you see that guy last named Mussi he was really hot and smart
by Mussis2005 June 21, 2016
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To be keen to do something
i.e. keen as mustard
man I'm hell mussie to play football
by Gazamattaz April 24, 2008
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