A joke that makes people laugh to death.

Once upon a time, there was a mountain with a temple in it. In the temple, an old monk told a story to a young monk: What story? Yes: Once upon a time, there was a mountain. There is a temple in the mountains. In the temple, an old monk is teaching a young monk to carry water. Oh, no, I forgot to bring the bucket. This story has to be told again. Once upon a time there was a mountain. ...