Given that I'm a four-year-old at heart, when I absolutely have to wear one in a store, I futz with mine on purpose. I breathe extra hard so that my glasses fog up mightily, thereby demonstrating how pointless the mask is. I stretch it away from my face so I can take deep, refreshing breaths. (And yes, I make sure to breathe loudly. You know, because I'm four years old at heart.) And I wipe my mask vigorously as though my face itches. No one cares, because it's all theater. I painted the word "bozal" (muzzle) on it to show my viewpoint.