BFI

Big Fucking Idiot ... in replacement of FBI - Federal Bureau of Investigation. Mockery of Police.

or

Big Friendly Idiot, like the old story of Big Friendly Giant.

Chamillionaire :

Til I talk to my lawyer, you get no reply
You've obviously been watching too much CSI
I'm not a crash dummy so don't even try
To talk your dirty trash to me, no BFI

by kooni November 20, 2007

BFI

But Fuck It

Missed the meeting, BFI.

by Benzo Barbie April 06, 2015

BFI

Butt Fuck Idaho-To drive aimlessly, and not know where you are going, and ending up in some hick town where the people all have summer teeth!

"Dammit!! Everytime i let you drive, we always end up in BFI!

by Macabre(EJR) May 12, 2003

BFI

Bed For Indigents

Evan: "Dude, I was passing by that laneway by the Mr. Lube, and some homeless guy crawled out of the dumpster, all stank and nasty! I think he slept in there!"
Art: "Dude, of course, that's a BFI!"

by g-othermal October 17, 2008

BFI

BFI means Big Fucking Intake.
It is the action of turning your normal air intake on your car into one that has the ability to suck in more air, therefore providing more power.

Ay dood, I jus did a fully hektik BFI on mah S15, I can now do drifts maight.

by smithter December 12, 2010

BFI

Bowel forced incident - when you and a partner mash your buttholes together and simultaneously take a dump.

After the date, we went back to my place for a glass of pinot and a BFI.

by Those 18 guys November 21, 2022

BFI

Back to Front Inequality - When someone looks really hot from the back/front until they turn around and you realize they are fugly.

Check out the slammin' hottie over there...
(she turns around)
Sweet Lord! It's a BFI! Thant's the third one this afternoon!

by shazzam23 October 08, 2011