A Problem with Donuts

She went over to the donut shop and looked in. No one was there. As she went in she heard voices from the front of the store, but saw only donuts on a conveyor belt. She watched them go by - every kind of donut she could imagine. She decided she had to try just one. I'll pay later, she thought. She picked out a chocolate covered one - her favorite - and ate it. It was so good she had to eat another.