What's So Funny?

A blonde had just gotten a new sports car and was out for a drive when she accidentally cut off a truck driver. He motioned for her to pull over. When she did, he got out of his truck and pulled a piece of chalk from his pocket. He drew a circle on the side of the road and gruffly commanded to the blonde, "Stand in that circle and DON'T MOVE!"

He then went to her car and cut up her leather seats. When he turned around she had a slight grin on her face, so he said, "Oh you think that's funny? Watch this!" He gets a baseball bat out of his truck and breaks every window in her car. When he turns and looks at her she has a smile on her face. He is getting really mad. He gets his knife back out and slices all her tires.

Now she's laughing. The truck driver is really starting to lose it. He goes back to his truck and gets a can of gas, pours it on her car and sets it on fire. He turns around and she is laughing so hard she is about to fall down. "What's so funny?" the truck driver asked the blonde. She replied, "Every time you weren't looking, I stepped outside the circle."