This guy had a problem of oversleeping. He was always late for work, and his boss was getting mad. So he went to the doctor and got some pills that were supposed to help.
That night he slept well and woke up even before the alarm! He had a leisurely breakfast and drove happily to work.
“Boss”, he said. “The pill the doctor gave me actually worked!”
“That’s fine,” said the boss, “but where were you yesterday?”
The two best times to keep your mouth shut are when you’re swimming and when you’re angry.