GFZ/GFA
This could stand for either Grenade Free America/Zone or Ginger Free America/Ginger Free Zone. Or possibly both if there are no ginger grenades!
EX 1: *Person looks around* No fugly people! YESSS! It's a GFZ/GFA!
EX 2: *Person looks around* No gingers!!! YESSS! It's a ginger free america/zone!!! GFZ/GFA
EX 2: *Person looks around* No gingers!!! YESSS! It's a ginger free america/zone!!! GFZ/GFA