mbsfn 

Must Be So Fucking Nice

*Sees a cute couple*
“Ugh mbsfn”

mbsfn by pseudonymPoo October 10, 2018

MSFN

Stands for Microsoft Software Forum Network. A good place for support for basically all to do with computers, old and new. Lots of unofficial development goes on there, especially for the Microsoft Windows operating systems.

Guy 1: I need help with my old, aging computer
Guy 2: Go to MSFN

MSFN by KliaeKrown February 12, 2013

MBFN 

Must Be Fucking Nice

Jack has the next week off of work because of sick days not used. He's already used his vacation earlier this year. MBFN.

MBFN by Mike Max. June 30, 2011

mbffn 

it stands for Male Best Friend For Now
it is used by more pessimistic people who expect there male bff not to stick around for ever

your my mbffn

mbffn by the one... yes that one February 20, 2017

Mbfn 

Must be fucking nice

My best friend and her boy friend just made 2 year mbfn.

Mbfn by Aye 🖍 August 15, 2018

MSFNR 

Literally means "Mad Stupid For No Reason". It can be used to describe an act of stupidity or an action of no significance what so ever.

Professor: The classes' average was a 33
Josue: 'Tis a nice shrubbery!!!
Drigz: MSFNR

MSFNR by Mike Drigz December 8, 2005

Mbfn 

Must be fucking nice

You have 3 days off this week mbfn

Mbfn by Roxieana December 5, 2018