Change for a $15 bill
An incompentent counterfeiter spent all day making his funny money. At the end of the day he realizes he spent all his time making $15 bills.
He figures that the only way he's going to get anything from this batch of money, is to find a place where the people aren't too bright and change his phoney money for real cash.
He travels to a small town and walks into a small Mom and Pop grocery store. He goes to the old man behind the counter and asks him, "Do you have change for a $15 bill?"
The old man replies, "I sure do...How would you like that? An eight and a seven or two sixes and a three?"