A customer makes a small order, you deliver the goods, and he pays by check. The check clears. He makes another small order, you deliver, and he pays by check. The check clears again. The pattern goes on for several weeks. Then he makes a very large order. You deliver, and he pays with a check. The check bounces. However, when you go to see him, he is gone, and the store is empty. This one-time check fraud is called a: