Have you ever found yourself in a situation where you're watching a movie on a plane and suddenly a sexually explicit scene comes on? Maybe you didn't know it was coming or assumed the airline would only show a clean version of the movie. Do you blush and then turn it off, so no one sees you watching it? Or do you continue watching the movie you've already invested so much time in viewing? What about offending others seated around you? What if you're the one offended by someone watching an R-rated movie? An etiquette expert named Nick Leighton has chimed in on it. He says you should watch whatever you want but be mindful of those around you. If there are kids around, then maybe skip the scene. And if you're offended by what the person next to you is watching, feel free to politely ask them to watch something else.