A man and a woman, who had never met before, found themselves assigned to the same sleeping room on a transcontinental train. Although initially embarrassed and uneasy over sharing a room, the two were tired and fell asleep quickly, he in the upper bunk and she in the lower.
At 1:00 AM, the man leaned down and gently woke the woman saying, "Ma'am, I'm sorry to bother you, but would you be willing to reach into the closet to get me a second blanket? I'm awfully cold."
"I have a better idea," she replied, "Just for tonight, let's pretend that we're married."
"Wow! That's a great idea!" he exclaimed.
"Good," she replied, "Get your own blanket."
After a moment of silence, he farted.
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I hope that gave you a good laugh!