The new husband had booked sleeping arrangements on the train, thinking he was going to have a roomette or compartment, only to find out he was on one side of the sleeping car in an upper bunk and his wife was in the other one across from him. At about midnight, he wanted to have sex with his wife, so he said, "Hey honey! Why don't you come over here?"

His wife replied right back, "Well honey, how will I get over there?"

"Don't worry! I got something you can walk on."

In answer to that, a fellow in the lower berth said, "Yeah, but how is she going to get back?"