Switching seats

A blonde came home
from her first day commuting into the city. Her mother noticed she was looking a little
peaked and asked, "Honey, are you feeling all right?"

"Not really," the blonde replied. "I’m nauseous from sitting backward on
the train."

"Poor dear," Mom said. "Why didn’t you ask the person sitting across from
you to switch seats for a while?"

"I couldn’t," she replied, "there was no one there."