Top Definition
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
by Mike Drigz December 06, 2005
5 Words related to MSFNR

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