Train Joke

Man and a woman, strangers, share a berth on a x-country train. Nighttime falls and they turn down the bunks.

A couple of hours go by. Guy, in the top bunk, leans over, says "excuse me, miss, its a bit chilly, would you pass up a blanket?"

"I've got a better idea," says the woman throatily. "Why don't we pretend we're married?"

"Uhh, sure,"says the guy, "that sounds great!"

"OK," she says turning over, "get your own damn blanket."