Ladies and Gentlemen, meet "Luke," my seatmate on United Flight #959 today to Chicago. Luke didn't say much -- which was fine by me -- but what he did say sort of hung in the air like a miasma. "Do you mind if I leave this here?," he asked. It was a Barf Bag. He smiled at me and placed it snugly on the armrest between our seats. The bag was empty, thank God, but his intentions were clear: He expected to be using it shortly and wanted to keep it within easy reach. Would Luke puke? That was the question that haunted me for the duration of the nine-hour flight. Every so often I'd steal a look at the bag, then at Luke who, surprisingly enough, seemed to be enjoying the flight immensely. He ate a heavy meal, belched loudly, and nodded off to sleep. Who knows ... maybe the whole thing was just a Gag!