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A shady ass person that likes to have their mouth open as wide as their legs. They have multiple sexual relationships without the knowledge or consent of any of their significant others and will sneak off the moment you fall asleep or turn your back. Never trust someone with a weasely rep.
Mary: Hey, have you been hanging out with Tim lately?
Jane: Ew, fuck no. Tim's a weasely little bitch. He cheats on everybody.
by Emily & Pahut June 08, 2015
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2
Behavior that is like that of a weasel.
Such as in, "That was a weasely move you just pulled, you sonofabitch!"
by Weasel's Ex-wife September 24, 2013
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