look up any word, like blumpkin:
 
1.
MFB
Mother Fucking Beast. Someone who is the greatest at something.
P1: Did you see Sam make that touchdown?

P2: Yea, he's a MFB at football!
by LOTR4eva1 December 31, 2011
 
2.
MFB
Mother Fucking Best-not to be confused with its homograph, meaning: "mother fucking bitch"- Should only be reserved for the people and things in the highest tiers of the world. The titles of all MFBs are mutually exclusive to all others in their profession. Examples: Warren Buffet, Madonna, Google
Wow Tiger Woods is a MFB
by bramcl August 15, 2008
 
3.
Mother-fucking-bullshit
This is totally MFBS
by bobbbbbbb12415 March 03, 2010
 
4.
mfb
mother fucking bitch
My sister is an mfb, seriously
by ashley demo September 19, 2006
 
5.
MFBS = Mother Fuckin' Bull Shit.
Everyone said that chick was DTF but she wouldn't even come home with me. That's some MFBS.
by sexkittenmeoowwwww October 16, 2010
 
6.
MFB
Motherfucking Bastard
Person 1: I killed your mom.
Person 2: Your such a MFB!
by Pumpernickle-Bandits February 11, 2011
 
7.
MFB
Mother Fucking Best-not to be confused with its homograph, meaning: "mother fucking worst"- Should only be reserved for the people in the highest tiers of the world. The titles of all MFBs are mutually exclusive to all others in their profession. Examples: Warren Buffet, Madonna, Google
Wow Tiger Woods is a MFB
by bramcl August 15, 2008