A man and a woman, who had never met before, found themselves assigned to the same sleeping room on a train.

Though initially embarrassed and uneasy over sharing a room, the two were tired fell asleep quickly, he in the upper bunk and she in he lower.
At 2:00 AM , he leaned over and gently wakes the woman, saying,

“Ma’am, I’m sorry to bother you, but would you be kind enough 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, why don’t we pretend that we’re married?”
“Wow! That’s a great idea!!” he is excited.
And she says :
“Get up and take it yourself”