FMB

FMB a abbreviation for Finger my butthole. Can be used to pick up bitches, men, or young children.

"Hey, bitch, FMB." Pimp to Hoe

by Adejeezy March 23, 2010

FMB

"furrow my brows" when something is completely wrong or you are confused about something.

--Hey dude, I just downloaded the new one direction album, their music actually isn't that bad.

-- no, dude it is actually a piece of shit, fmb

by brows4brows April 27, 2014

FMB

Fuck My Brain

Aaaarrrggghhh!! FMB!! I can't get that song by blah blah out of my head!

by Dr Watson October 13, 2010

FMB

Probably the douchiest fucking way to say "fill my bong" or "filling my bong" on the face of the Earth.

excuse me my nigga as i FMB

by xxyyxx July 15, 2011

FMBS

Fuck My Board Scores

I just bought Starcraft 2. FMBS.

by JAB-OMS2 August 2, 2010

FMB

Fuck Mad Bitches

O-town Slang
Used as a verb or standalone phrase to denote promiscuous desires (especially on school breaks and weekends at the club or beach)of high school and college age males. *originated in west orlando

FMB

J: lets go to a movie
B: Hell no faggot lets go to the club and FMB

by vsqm? April 30, 2009

FMB

fuck my beard.
used as a pick up line for sad people with big facial hair

"hey sexy lady, fmb"

by ernieW March 27, 2010