MFB

MY FUCKING BALLSAC.
An Acronym formed at the shores of Atlantic City by a group of bored teenagers meaning bullshit.

Steve:Man I banged both of those broads last night.
Joe:MFB, son. the only two things you banged were your left and right hands.

by ACjoe September 25, 2008

MFB

1. Michigan's First Bank.

2. Motherfuckin Bitch

1. I went to MFB to rob some money.

2. She is an MFB.

by Qui Long July 9, 2009

mfb

mother fucking bitch

My sister is an mfb, seriously

by ashley demo September 19, 2006

MFBS

Mother-fucking-bullshit

This is totally MFBS

by bobbbbbbb12415 March 3, 2010

MFBS

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 19, 2010

MFBS

MFBS is the acronym for "more fucking bullshit" a very common situation.

All that time I spent researching that product for Amy was just MFBS!

by ilookmarvlus June 26, 2022

MFBS

Mother effing BILLY STRINGS

Wanna go to the MFBS show?

by LittleSuzieL. December 8, 2022