A guy says at a party, "You should trust me. I'm a BILLIONAIRE."

Then, you say, "Okay, I'll trust you, if you prove you are actually a billionaire."

The guy whips out a check, writes it for ONE MILLION DOLLARS, and says, "Go cash that, and you'll know."

So you go to the bank and the teller says, "This is a fake check."

You go back to the BILLIONAIRE and say, "That's fake."

He smiles and laughs and says, "Must be some mistake. Here is the key to my safety deposit box with 5 MILLION dollars in it. Go look, and then you'll know."

You go to the safety deposit box and there is five million dollars, but the ink starts to smear onto your fingers --- fake money.

You go back to the guy, but before you can say anything he screams, "YOU CONSPIRACY THEORIST."