Two guys are down diggin a ditch and the first guy says to the second guy, "How come we're down here diggin' this ditch, while the foreman just stands there?! Go ask him!"

So the second guy goes up and asks the foreman, "How come we're diggin' this ditch while you're just standin' here?" The foreman replies, "Intelligence, me boy." And the guy says "What's that?" So the foreman holds his hand up in front of a wall, and says "You see my hand in front of this wall? Try to hit it?" And the guy throws a big haymaker at his hand, and the foreman moves his hand out of the way at the last second, and the guy smashes his hand against the wall, and the foreman says "That's intelligence. Now get back in that ditch."

So the second guy goes back to the first guy in the ditch and the first guy says "What did he say? Why is he just standing there?"

The second guy says "Intelligence, he said."

So the first guy says "What's that?"

The second guy holds his hand up to his face and says "You see my hand in front of my face?"