But if you do, you’re allowed to take it off.
Little ones, big ones, in-between ones. 
Toss it behind your seat. 
Stuff it in your pocket. 
Put it on your lap.
Use it to wipe the corners of your mouth when the server lingers. 
Give the gift of freedom. They’ll thank you for it. 
You don’t have to wear your bra to dinner. 
But if you do, you’re allowed to take it off