Two farmers are walking through a field and come across a huge sinkhole in the ground.
“Wow!” says the first farmer, “I wonder how far down this thing goes.”
He takes a penny from his pocket and throws it into the sinkhole. The two farmers listen, but they never hear it hit the bottom.
The second farmer picks up a large rock off the ground and throws it into the sinkhole
Again, both farmers listen, but they never hear the rock hit the bottom.
The second farmer spies an anvil a few feet away, and together the two farmers struggle to haul the anvil over to the sinkhole. They throw it in, and listen, but it never seems to hit the bottom.
The farmers turn to leave, when all of a sudden, a goat comes speeding towards them at 30 miles an hour, and jumps straight into the sinkhole.
As they are leaving, a third farmer runs towards them, waving his hands.
“Have either of you seen a goat?” he asks frantically.
“Yes,” says the first farmer, “In fact, a goat just came galloping through the field and jumped right into that sinkhole there.”
“Impossible!” says the third farmer, “I had him tied to an anvil!”