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You FIB , get your lazy fat arse from in front of the TV and go and cut the grass.
Fib by Kev68 August 18, 2007
Related Words
FIB Fibromyalgia fibber fiberal Fibbles Fibes fiblet Fibbs fibba Fibbing
Verb – to fib. To be harmonically proportionate in face or body features. Fib could also stand for rapid, exponential growth.

Fib is short for Fibonacci Series, a series of numbers (1, 1, 2, 3, 5, 8, 13, 21, 34,....) that show constantly in nature and appear to underlie all processes of organic growth.
ex 1: She is not exactly a supermodel but she surely fibs.

ex 2: He is a moron but his career is fibbing.
fib by MikeSoussan April 24, 2008
FIB - Friend In Bed

A cleaner and nicer way to say to say fuck buddy for the terminally polite. So clean you can say it in front of Grandma.

First used by Requiem in Danse Macabre of the Anita Blake Series by Laurell K. Hamilton.
Dude 1: Whats the deal with you and Julie?

Dude 2: She just my FIB.

Grandma: Fib?
FIB by AnitaBlakeLover May 13, 2011
Fucking Illinois Bastard

This term is derived from Wisconsin natives bitter sweet relationship from each others state I am personally a FUCKING ILLINOIS BASTARD SO DONT FUCK WITH ME but anyways there boring the best thing that comes there is cheese like what the fuck? Cheeeeeese? That makes people involuntarily projectile shit and of course they have the Green Bay packers Green Bay is a miserable shipping town and then on the other hand we have us FUCKING ILLINOIS BASTARDS we have the amazing and architecturally brilliant city the amazing pizza etc. and the gritty, non cheesy Chicago Bears plus we have the cubs Sox and Chicago Bulls the Bulls was the birthplace of MJ’s basketball career and Milwaukee is salty that they got there asses kicked multiple times but Michael unlike them when they got beaten bad once so this is a quick summary of the rivalry and how the term Fucking.Illinois.Bastard came to be
I saw a FIB talking shit about the packers in the sandbar tavern so I let one loose and left that feller lyin on the ground
FIB by (Not from Chicago) June 8, 2019
Famed Imagined Boyfriend. This is a Famous Imaginary Boyfriend, who has actualized, taken form and is present.
My husband is also my FIB
FIB by Paris Morgan January 18, 2010