A small rodent like person who is renowned for his sneaky, dishonest and generally unpleasant nature and is universally disliked. The weasel often has dirty gingery hair on his face and snout and is found skulking around in the shadows in a manner very consistent with other rodents.
"That Mennel guy is such a weasel."

"I'm going to exterminate that frickin weasel if I see him in the ECL labs again!"
by Ynngwie J Malmsteen October 23, 2008
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A sneaky, cunning person. Who will do anything in an attempt to steal one's girl. Will try to hook up with a girl who was already hooking up with someone else. Just like the "Situation" when he tries to pull a robbery.
Ryan: Hey so how'd it go with Alyssa at that party last night?
Mike: We were hittin it off all night. But when I went to use the bathroom I got back she was hooking up with Garret in his room. What a fucking weasel
by Ryan Too sick October 18, 2010
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A shyster. A lawyer. An attorney. A person who earns money by suing people.
Algonquin J. Calhoun is a sneaky little weasel.
by Bumkicker Slade May 7, 2005
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A little annoying dude who will usually scam people out of money etc.
GIVE ME BACK MY MONEY YOU LITTLE WEASEL!
Weasel:Hahaha
by CombatWombat August 9, 2003
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A slippery character who cannot be trusted to remain faithful to his girlfriend and is putting it about whenever possible
Scott is always on the pull, even though he's got a girlfriend! Scott's a fucking weasel.
by Dangerman Dan May 27, 2011
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best animals ever, they are much better than ferrets
Lily and Esmé are weasels, they are better than everyone
by weasela December 30, 2016
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To watch Twitter or other social media drama but never get involved in others' stupidity. Often used with accompanying gif of weasel popping out of burrow.

**Also, to squeeze something long into a tight hole.**
Alexander is an expert at weaseling when everyone loses their shit on Twitter. Instead he watches, laughs maniacally and collects the details.
by xxxWeasel October 25, 2016
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