Three construction workers were standing around a work site one day having lunch. The first looks at the other two and says, "You guys are worthless. I bet 10 bucks I can throw a brick higher than both of you."
The other two take the bet and gather three equal sized bricks.
The first guy leans way back and throws his brick. The brick goes up and over the tallest crane at the construction site.
The second guy leans way back and throws his brick. His brick goes up and over the skyscraper next door to the construction site.
The third guy leans way back and throws his brick. They never see the brick land.