On my recent return flight from the states I saw something that would forever change my flying experience. It happened at that time in a flight when passengers fed; slip off into their own private space. Engrossed in books, movies, music or relaxing in the place of reverie all is quiet bar the sound of the engine wrapping itself around the plane. When suddenly, a short, loud, delightful burst of serious, belly laughter fills the air. With silence broken a number of disconcerted bodies shift and settle. But not for long, as a few moments later another loud burst of laughter escapes. Straight from the belly it is deep, rich and male.