Mother in law

My mother-in-law is not known for her driving skills. So it came as no surprise when she was in another accident a couple of months back. She came out of a side street and ran slam-bang into the town doctor's car.

"Oh Doctor!" she exclaimed, "I'm so awfully sorry!"

"That's perfectly all right," he said, "It was all my fault."

"I don't know how you can say that. I'm sure it was entirely my fault."

"No, no, dear it was my fault. I'll take the entire blame."

"But why is it your fault? I ran into you, didn't I?"

"Yes, you did. But I saw you driving downtown half an hour ago, and I had plenty of time to take my car home and put it in the garage, but like a damn fool, I didn't do it!"