An exhausted and/or frustrated sigh; origin: onomotopoeic (a deflating of the chest through loosely connected lips; not to be confused with the much more upbeat raspberry)
by Kaolin Fire August 07, 2008
A rarely used substitute for fuck, often used when fuck is deemed too offensive.
Fwibble off you mother fwibbling ass raping bitch whore
by Fwibble Girl March 31, 2005