Today, a middle-aged customer tried to pay for a $2 ice cream bar with a credit card. It was declined, so he made me swipe it again. Declined. "Quit touching the metal strip," he scowled. I held the outer edge of it and swiped. Declined. He then bitched me out as his mother paid for him. FML
Then the mom bought him another one 15 minutes later.
Sugar free ones cost a little more, so she was mad about that too.