Dispatching her ten-year-old son to pick up a pizza, my sister handed him money and a two-dollar coupon.
Later he came home with the pizza and the coupon.
When asked to explain, he replied, "Mom, I had enough money. I didn't need the coupon."
Classmates at college were lamenting the cost of long distance phone service and debating the relative advantages of AT&T, MCI, and Sprint.
"I've found CTC to be the cheapest plan around," offered one.
"CTC? Who are they?"
"You know," he responded. "Call Them Collect."