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when a rather older man who is also rather over weight dresses up (or cosplays) as Misty from pokemon.

Man+nasty+misty = MANSTY

can also replace the word 'nasty'
dude, that filth is mansty
by NekoChan99 May 19, 2010
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this definition is for guys for a home or apartment who's place is a mess rather than referring to it as the pig-sty, we call it the man-sty
I got a girl comin' over tomorrow so i gotta clean the man-sty tonight
by starsky88 November 04, 2010
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