[diebitter]

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or you could just tell us and save us the trouble of watching a crap movie/show/whatever

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Ok, here's a summary I found:
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The con artist goes into a store to buy something under a dollar. At the register, he pays with a $5 bill. The store clerk takes the $5 and gives him the change. Then comes following exchange.

The con artist says, "I have too many singles in my wallet. Let me give you five $1 bills and you give me a $5 bill."

The clerk gives him a $5 bill and takes the five ones. So far so good.

While the clerk still has the five ones in his hand, the con artist says, "I still have too many bills in my wallet. Let me give you back the $5 bill, together with the five ones in your hand. And in exchange, you give me a $10 bill."

The clerk unwittingly hands him a $10 bill -- not knowing that he only owes $5, not $10, at that point.
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You can scale up the denominations of course.

Actually, now I've pasted and read it, it doesn't sound very likely, does it?