Mutant Zombie Bikers

From Wolfekipedia

n. Frequently shortened to its initials: MZB, and used to describe a commonly held worst-case scenario an individual may face in a defensive sense.

• Many proponents of the Main Battle Rifle as a defensive arm have used the MZB, or any large and violent pack of people who wish to do harm. While this is a valid concern, and the MBR is well suited for such use, many are satisfied with "lesser" arms.
• In other cases, the choice is made by an outside party, effective defensive arms being limited by law in some areas.
• Training and practice are paramount, however, regardless of the chosen weapon.