2 definitions by FattyMatty

A Messy Jessie is any girl who really likes it up the butt and will take it from any guy, anywhere, but also keeps a steady boyfriend who has no idea. A level 2 Messy Jessie is when her boyfriend has heard the stories, but doesn't believe his "little angel" would do that.

Short- MJ, Dirty MJ
Girl 1- That girl has more cum in her ass than a gay porn star.
Girl 2- Yeah, she's a real Messy Jessie.
by FattyMatty November 2, 2012
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an acronym on Fall Out Boy's new album.
no one quite knows what it means,
Pete Wentz wont tell anyone what the definition of W.A.M.S. means.
by FattyMatty December 17, 2008
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