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a person who behaves in a sneaky manner to try and create favourable circumstances for themselves, or to cover their tracks, quite often at the expense of others. They use weasel-words to try and make a story sound in their favour whilst never directly lying, usually by leaving out key details such as who actually did a piece of work.

A fuckweasel will always avoid telling a direct lie in case they are exposed, giving them plausible deniability or letting them fall back onto "a misunderstanding" excuse, such as;

Boss> "I spoke to Steven and he said he'd written that report you said you'd done"
Weasel> "Ah no, sorry you must have misunderstood, I just came over earlier to tell you it was completed."

The "boss" in this case has no comeback as the fuckweasel is technically correct, although it is clear what the inference was in the original conversation.

A good fuckweasel will pick his or her stories cleverly to lower the chance that a discovery will occur.
My manager asked me to stay back last night and finish some content. When I came in this morning I found out that he had sent an email out early to the department saying it was finished and I spotted someone in the coffee point thanking him. I wasn't even mentioned. What a fuckweasel!
by the_manager July 11, 2013
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a shade of fushia ... usually very bright but not neon or hot pink.
What color is your prom dress?
Fuck Weasel of course! :D
What color is that?
A bright pink.
by erin81698 July 13, 2011
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A person who declines delicious home made leftovers when leaving a friend's, relative's, or stranger's home after a scrumptious meal has been provided free of charge.
Grandma: Here you go my loving grandson. I well wrapped plate of leftovers for you to have for lunch tomorrow.

Grandson: Aw grandma, that sure was sweet of you, but ou know that I don't eat left overs.

Dad: Hey you little un-grateful Fuck Weasel. You take those leftovers and thank your grandmother.
by txredfish May 31, 2009
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A person within your friendship group who acts like a two-faced little rat the majority of the time, but still manages to stay in said friendship group by the skin of his teeth despite the weasel-like behavior.
Hey, you know that guy that was in the CFNM porno? You know, the one that got sucked by a bloke? He's acting like a right little fuck-weasel again.
by BuBurnley66 July 12, 2017
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A horrible looking girl used primarilly for one stands after a bottle of vodka, she has both fuck and weasel like qualities.
Get that fuck weasel out of my bed will ya!
by Colemanio23 April 08, 2008
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Somebody who is such a gimp that they could only fuck weasels. And only then if the weasel agreed.
Dan is such a fuckweasel!
by sparky January 27, 2004
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