This joke is from a classic TV show. See if you can remember which one.
A cowboy is riding on the plains and he sees an Indian with his ear to the ground. He stops and gets off his horse and asks, "Excuse me partner, what do y'all hear?"
The Indian replied, "Covered wagon. Fourteen calvary. Woman in covered wagon have baby."
That's amazing," the cowboy exclaimed. "You can tell all that just by listening to the ground?"
The Indian said, "No. Ran over me, half hour ago."