A couple came in - the only masked people in the entire restaurant. They sat there at their table, masked and looking unhappy, not like they were enjoying themselves at all. When their appetizer came, the unmasked, gobbled it down, and re-masked. When their food came, they unmasked, ate a few bites, re-masked for a minute or two... lather, rinse, repeat. No dessert. As soon as they were done they re-masked.
They were very entertaining to watch - like rabbits furtively eating while warily watching out for predators. They never seemed to be enjoying themselves or talking, just glancing around nervously. I couldn't look away - I kept checking on them. I thought, if you're that scared to be out, why are you out? Just plain silly.