Paddy O'Reilly is driving home after a few pints of Guinness down at the local pub.He turns a corner and, much to his dismay, he sees a tree in the middle of the road. He swerves to avoid it and, almost too late, realizes that there is yet another tree directly in his path.He swerves again and discovers to his horror that his drive home has turned into a veritable slalom course, causing him to veer from side to side to avoid all the trees in his path.Moments later he hears the sound of a police siren and brings his car to a stop.Officer O'Malley approaches Paddy's car and asks him what on earth he was doing.Paddy starts to tell his story of the trees in the road when the officer stops him in mid-sentence and says, "Fer Chrissakes, Paddy, that's yer air freshener!"