A state trooper pulls over a woman on a lonely back road and says, "Ma'am, is there a reason why you're weaving all over the road?"
The woman replied, "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. So, I swerved to the left and there was another tree in front of me. Then, I swerved to the right and there was another tree in front of me!"
The officer reached through the side window to the rear view mirror, and explained, "Ma'am, that's your air freshener."