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1 definition by faia

A girl with big boobs who seems sweet and nice. But is very slutty and will go far with you however also cheats on you eventually. the most common technique for a Mary is to get with her then get over her.
"Aww man i saw Mary making out with Trevor and we have only been going for two weeks!"

"I banged Mary last night, then i deleted her from my contacts."
by faia May 01, 2009