A driving examiner was giving a road test to a young man, and he went through a red light without stopping. He told him that he had automatically failed the test.

The examiner met up with his mother back at the office, and explained what had happened.

At first the mother was speechless. Then she asked incredulously, "He ran a red light?"

"Yes," he replied.

"Well," persisted the mom, "how red was the light?"