Make somebody happy.
I was at a supermarket the other day, about to pay my bill.
"Do you have a Vector Card?" She asked.
"What's that - a reward card, or something?" I asked.
"That's right." She replied cheerfully. "Would you like to know all about it?"
"Oh, no." I replied. "My reward is seeing you, my dear." I replied, with a wink. It made her day. She was still chortling to herself as I left.:-D