An unmarried man and woman accidentally end up together in a train sleeper, the woman in lower berth and man in the upper berth. The woman was interested in the man, so she made conversation. "It may get cold tonight, and I think I'll need a blanket. Are you married?"

"No" he answered.

She said, "Would you like to pretend we're married?"

"OK," he said, "Go get your own blanket!"