There was a guy who kept hearing the same whining and moaning about the same problems and issues over and over again. Day in, day out, always the same story.

One day he decided to tell a joke to the complainers, and they were on the floor with laughter.
He decided to tell the joke again and now just a few people laughed. He repeated the joke for the third time but this time no one reacted.
At this point, the guy said, “If you won’t laugh at my joke more than once, what are you getting out of complaining about the same problem over and over?”