Explorer in the Amazon

Once there was an explorer lost in the deepest part of the Amazon. After a few days, he finds himself suddenly surrounded by hundreds of blood-thirsty natives. He looks up to the sky and says, "Oh my God, I'm screwed!!"

All of a sudden, the sky opens up, and then there is a beam of light streaming down on him, and a voice booms out, "No, you are NOT screwed. Pick up that stone at your foot, and smash it onto the skull of the chief."

So the explorer looks down, and sees the stone. He picks it up, and bashed the life out of the chief. He stands on the chief, triumphant, huffing and puffing, with the bloody stone in his hand, while the tribesmen are in shock and disbelief.

Now, the sky opens up once again, and the voice booms out... "NOW, you're screwed."