When it was time to pay, the payment screen automatically asked for a 20% tip.
He looked at the cashier and said,
“A tip… for food I drove here to pick up myself?”
The cashier seemed uncomfortable, and a few people in line started staring.
My dad refused to leave a tip, paid for his food, and walked out shaking his head.
Later, he told me,
“Tips should be for service, not just because a screen asks for one.”