Joey came home from his first day of commuting to work into the city.  Joeys' wife  noticed he was looking a little peaked and asked, “Honey,
are you feeling all right?”

“Not really,”  Joey replied. “I’m nauseous from sitting backward on the train.”

“Poor dear,” Mrs.  Joey said. “Why didn’t you ask the person sitting across from you to switch seats for a while?”

“I couldn’t,” replied  Joey, “there was no one there.”