See no Panties, Hear no Panties, Speak no Panties.

I was working cashier when a young couple, man and woman, were making their purchase.

"Do you think they make them wear the underwear?" The young man said under his breath, grinning like he'd made a funny.

Overhearing him I smiled as I added up their total and replied, "It's not mandatory, but it is encouraged so we might provide personal testimony. That'll be $51.25"

The man handed over his credit card without saying anything, and neither half of the couple said anything in reply as they took their bags and left.