A state trooper pulls over a car on a lonely back road and approaches the driver. "Sir, is there a reason you're weaving all over the road?"
The driver replies, "Oh officer, thank goodness you're here! I almost had an accident. I looked up and there was a tree right in front of me. I swerved to the left and there was another tree in front of me. I swerved to the right and there was another tree in front of me!"
Reaching through the side window to the rearview mirror, the officer says, "Sir, that's your air freshener."