face mask, n.Definitions

A Face mask is an item worn by surgeons to reduce chance of positive identification in event of negligence charges.

A Face mask is something our leaders should be wearing to set an example — It's hard to lead a cavalry charge if you think you look funny on a horse.

A Face mask is a device that works like this: my mask protects you, your mask protects me. To not wear one is to communicate that you have little regard for the welfare of those around you.