MFZ stands for "monster free zone", originated in NY to deal with people who keep coming back , hence are monster's.
that girl is a monster, this is a MFZ
by coolperson65 October 31, 2010
Used by people who are too lazy to type motherfuckers!
watta bunch of mfz!
by bunnah April 10, 2005
Masturbation Free Zone
The hotel in Las Vegas was deemed an MFZ, no matter how hard Mike complained.
by arson83 May 31, 2011