Two married couples go on a train but they get separated and one man and a woman wind up together in an overnight compartment. They are both shy about sharing a compartment but go along with it anyways. The man took the top bunk and the woman took the bottom. In the middle of the night, the man leans over and says to the woman "I'm freezing. Could you get me another blanket?" The woman rolls over and looks up at the man. "Just for tonight, let's pretend we're married." The man replies "Okay!" "Get your own darn blanket!"