When a customer left his mobile phone in a shop, the assistant scrolled through his saved numbers.
When they found ”Mum” they stopped and pushed the dial button.
His mother answered, and they told her what happened.
"Don't worry," she said, "I'll take care of it."
A few minutes later, the mobile phone rang. It was "Mum."
"Melvin," she said, "you left your mobile phone at the shop."