A Dangerous Undertaking

I’m standing outside the cave with 24 tourists ready to go inside. A few of them are concerned about a “cave-in” occurring. I say to the group, “You folks paid something in the neighborhood of $10 to go on this tour. We will be about 120 feet underground . In the event of a cave-in, you can take heart that nowhere else in the world can you be buried so cheap and deep.”