Joe: "Say Moe, I'll bet you $10 that I can prove to you that I'm not actually here."

Moe: "Not actually here? That makes no sense."

Joe: "Well then, I'll prove it. Am I in Chicago?"

Moe: "No."

Joe: "Am I in New York?"

Moe: "No."

Joe: "Am I in Hawaii?"

Moe: "No."

Joe: "If I'm not in any of those places, I must be somewhere else, and if I'm somewhere else, then I'm not here. I'll take my $10 now, please."

Moe: "How can I pay you if you're not here?"