? 
A man and a woman who had never met before,
but who were both married to other people,
found themselves assigned to the same sleeping room on a Trans-continental train.Though initially embarrassed and uneasy over sharing a room, they were both very tired and fell asleep quickly, he in the upper berth 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 f..... blanket.'