A cop pulled over a car for swerving all over the road. The blonde at the wheel looked very confused and scared.

"What's going on here, ma'am?"

"Well, I was driving along when all of a sudden there was a tree right in my path. I swerved to miss it, but there was another tree. And after that, another, and another." The cop looked inside her car and sighed.

"Ma'am. That's your air freshener."