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Sneaky motherfucker is a word that describes a person who is up to something no good shit! They're always trying to pull something and hope that they do not get caught, so this person is known as a sneaky motherfucker
Joe; did you see that sneaky motherfucker roaming around the parking lot

Max; yeah I saw him he's definitely up to something no good shit! He's just acting like a real sneaky motherfucker !!
by Get real, Ya All!!! March 20, 2016
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