One evening a teenage daughter and her mother were out shopping when they stopped to make a purchase.
The young girl greeted the cashier with only a “Hi,” then proceeded to dig nervously in her wallet.
She was having obvious trouble counting out the correct bills and change.
But rather than help, the cashier simply stood and watched while she fumbled and mumbled her way to the correct amount.
Finally, the transaction was completed.
As they were walking to the car, the teenager turned to her mother and said, “That was my math tutor.”