Its Father In Law ... Simple typo replacement is FIL
My FIl is the best Father in law in this world ... :)
by Viz22 June 26, 2016
Get the merch
Get the FIL neck gaiter and mug.
acronym for FUCKING IDIOT LIAR. A person who openly makes up stories and lies to you, but is ridiculously idiotic and so doesn't understand your superior intellect knows he is lying to you.
FIL - yeah bro, I want to discover black matter, I'm way into physics.

smart guy - I think you mean 'dark matter'

FIL - yeah, thats what I'm talking about, black matter. Dude I got my masters in Physics, I'm brilliant!

smart guy- wow, I think I need to go.
by bigbinthehizzy July 29, 2009
Get the mug
Get a FIL mug for your father José.
abbreviation of Father-in-law; often used in internet conversation
My FIL is flying down to see my husband and me this weekend.
by TweedyChic March 27, 2005
Get the mug
Get a FIL mug for your Facebook friend Helena.
OMG! Beth, I saw Jack at the pumping gas at the gas station yesterday. He didn't realize it was me so i beeped. He waved, paused a second, and then he had this really big shit eating grin on his face only a FIL would have.
by GHFdaja87 February 26, 2006
Get the merch
Get the FIL neck gaiter and mug.
Fake Internet Lesbian. An adult entertainer that only performs with women when in front of a camera.
She is just a fil; she is actually married to a man.
by spacedoc October 20, 2006
Get the merch
Get the fil neck gaiter and mug.