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1.
Online expression mocking a sexual innuendo or pun
<john> (talking about returning a book) I gave it to her last night
<paul> fnaar!
by CrystalEyes November 16, 2007
 
2.
FNAAR! The exclamation crazy old scientists such as the Weeto's scientist dude makes when he's hard at work. He screams this as well, he has mad scientist goggles, the big frizzy afro and the big wide eyes. FNAAR!
<Mad Scientist> FNAAAR!
by Buns May 05, 2003
 
3.
A state of misunderstanding.
Dude...i feel so fnaar right now...
by Tom Thirwall August 30, 2003