1 definition by bigbinthehizzy

Top Definition
FIL
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

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

Buy the mug