Robin came home from her first day commuting into the city.
Noticing that Robin was looking a little peaked, her mom asked, “Honey, are you feeling alright?”
“Not really, “Robin replied. “I’m nauseous from sitting backward on the train. “
“Poor dear, “the mom said. “Why didn’t you ask the person sitting across from you to switch seats for a while?”
“I couldn’t, “Robin replied, “there was no one there. “
This joke is included in the Black Book of Jokes. You can order it from here.