A person that is a fucking liar!
Dude, Jim is such a fiar, he's never gotten laid.
by Andrew December 02, 2003
Someone who fakes illness to the max for attention.
Guy One "Did you hear that Sophie has Rickets?"
Guy Two "what? i heard she had heart failure?!"
Guy Three "she told me she has diabetes"
Guy One "ohmygod, she's such a Fiar"
by worthatleastasnakebite November 24, 2010

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