1 definition by Boogienights

Top Definition
FBI
Fausse Bonne Idea (orig French); An idea that at first seems really good but after some thought or in hindsight, it is actually quite stupid. This is very common amongst teenagers.

I thought I could launch a bottle rocket out of my ass, I guess that was an FBI.

by Boogienights September 24, 2007

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