A couple of counterfeiters made a mistake one time and ended up with a batch of $15 bills

One of them says “We gotta get rid of these things. We’ll go to Florida. I know a little town there. They’re so dumb they won’t know a thing.”

So off they go. Soon they arrive at a gas station and buy some gas. The guy at the counter looks a little simpleminded.

“Hey can you break a 15 dollar bill for me,” one of them says.

“Oh, sure, no problem,” the cashier says. The counterfeiters grin at each other.

“I told you,” the one whispers to the other, and they fist bump.

Then the cashier says to them, “so, do you want an 8 and a 7, or two 3’s and a 9?”