A man walks into a diner, and as he makes his way to the counter, he stops and talks to everyone in the place. As he finishes with each group of people, they all get up and leave and go stand outside the window, looking in. Finally, the diner is empty except for this guy and the waitress.
The man walks up to the counter, and says to the waitress, "I bet you $1,000 that I can spray a cup of coffee from my mouth into another cup from thirty feet away, and not get any outside the coffee cup."
The waitress thinks that this guy is a nutcase, but she wants his $1,000, so she agrees. The waitress gets out one coffee cup, paces off thirty feet, and the contest begins.
The man sprays the coffee all over the counter. He doesn't even touch the second cup. When he finishes, the waitress grins at him and says, "Well, I guess you owe me $1,000, huh?"
The man answers, "Yeah, but I bet all of those people outside the window $500 apiece that I could come in here, spit coffee at you and the counter, and have you smile about it."