10. 'UM'

“Where are their parents?” a passenger steamed about the 6-year-old triplet boys who couldn’t keep their hands off the call button. “Right now that would be the flight attendants,” I explained. “They are UMs traveling alone.” "Unaccompanied minors" can travel as young as 4 years old. On flights with multiple UMs, you may find us bribing them with M&Ms if they promise to nap.