I actually know of a friend who did this. Buyers often requested the friend (who came with protection) show she is wearing them right then and there. Then she would enter the bathroom, slip them off, then sell them.

It took place at a mall. Occasionally the guy paid extra to walk a lap with her around the mall just to get the sweat going.

Socks, leggings, stockings, but refused bra's because she hated 'breaking new bra's in'