The police officer pulls a car over on a back road and approaches the driver.
"Ma'am, why are you weaving all over the road?"
"Oh, officer," the woman replied, "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.
I swerved to the right, and there was another tree!"
"Ma'am," the officer said, reaching for the rear-view mirror, "that's
your air freshener."