An atheist professor was teaching a college class and he told the class that he was going to prove that there is no God. He said, "God, if you are real, then I want you to knock me off this platform. I'll give you 15 minutes!"
Ten minutes went by. He kept taunting God, saying,"Here I am, God. I'm still waiting." He got down to he last couple of minutes. Just then, a Marine just back from combat and visiting the college is walking past the room and hears the professors taunts. The Marine steps into the room, walks up to the professor, hits him full force in the face, and sent him flying from the platform.
The professor struggled up, obviously shaken and yelled, "What's the matter with you? Why did you do that?"
The Marine replied, "God was busy; He sent me."