In honor of St Patrick’s Day

And I can tell this joke because I’m part Irish (shirt color today notwithstanding):

Paddy is driving home after downing a few at the local pub. He turns a corner and, much to his horror, he sees a tree in the middle of the road!
He swerves like mad to avoid it, and almost too late realizes that there is yet another tree directly in his path!
He turns the wheel frantically again, and discovers that his drive home has turned into a slalom course, causing him to veer from side to side to avoid all the trees.
Moments later, he hears the sound of a police siren, and brings his car to a stop. The officer approaches Paddy’s car and asks him what on earth he was doing.
Paddy tells his story of the trees in the road, but he’s only halfway through when the officer stops him in mid-sentence and says …

… “Fer Christ’s sake, Paddy, that’s yer air freshener!”