There is a certain protocol to taking the red-eye when you fly at night. After going through the obligatory safety speech the flight attendants ask everyone to pull down their window shades and dim the lights so that everyone can sleep. Despite all the relevant clues...there's always bound to be some dimwit that continues to stay up chatting and laughing loudly all night long. You sit there getting more and more annoyed...until you realize that person is with you.