BDMF 

Big Dick Mother Fucker. A man who has been blessed with a larger-than-average size penis

I'm sprung on my ex still. He was a BDMF. Too bad he was such as asshole

BDMF by oldriverschoolroad September 2, 2007

BDMF 

Bow Down Mother Fucker

(timmy was playing call of duty 4 on x box 360 and got a head shot)
BOW DOWN MOTHER FUCKER! (BDMF)

BDMF by rettig ry June 28, 2008

BDMF 

Brain Dead Mother Fucker

BDMF =

That stupid co-worker that thinks they know everything and never knows when to shut up!

BDMF by JJT23 October 15, 2009

bdmf 

Broke Dick Mother Fucker - someone who has no money. Oftentimes a deadbeat or someone seemingly perpetually broke.

I'm not going to give that up a test drive. He's a BDMF.

bdmf by Joe250 April 29, 2005

BDMF 

1. Acronym for "Big Dumb Mother Fucker"
2. N. A big/strong man who extravagantly overdoes simple activities, especially in the gym.

Look at the guy over there leg pressing 1000 pounds for 8 reps; hes such a BDMF.

BDMF by D Durz Rhodes August 20, 2010

BDMF 

Behind-the-Desk Mother Fucker

Usually applies to the upper level of the big corporations that only know how to makes more money without giving a damn to their employee that are helping them to make more revenue. In general, they only see the numbers of their revenue, and don't even bothered to remember the names of the employee.

Those BDMFs are trying to maxed us out again!! Let's go strike!!

BDMF by Polyshot November 15, 2004