After discovering how to clone humans, two scientists challenged God:

"We don't need you anymore," they said. "We can make life by ourselves now."

"Okay," God replied, "let's have a man-making contest."

"All right," said the scientists. "We'll do it like you did in the beginning." Then they reached down to grab a handful of dirt to begin to form a man.

Then they heard God's voice from heaven: "Hold it—get your own dirt!"