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 Bitches

the best most problematic friendship group you'll ever meet. They might seem judgmental at first but once you get to know them they are the funniest kindest people ever.

person: omg they are so bitchy
person1: no they aren't don't judge the MFB group before you get to know them

by random yolo September 16, 2021

MFB

Mowru Fowru Bowru

MFB mowru fowru bowru

by 👁 hav a yuge phallus May 29, 2021

mfb

Caleb A

(Major fuck boy) “did you see that kid he’s dating 3 girls and none of them know about the others!”

“Omg yes he’s a mfb!”

by yourfavoritehoe ( ; October 16, 2018

MFB's

Monogamous Fuck Buddies

"Been seeing this chic...we're MFB's"

Made it up in Melbourne seeing a Sheila. PAH

by Pablocopenhoward May 23, 2023