As I boarded the aeroplane, ready for my long-haul flight, I noticed a boy about the age of 12 sitting next to me. He was wearing earbuds and chewing gum. Now, gum doesn’t bother me, but one thing that does is when people chew gum with their mouths open.
The boy looked over at me with a smirk. “What?” I said, angry at him, my face growing hot.
“You look upset at me.”
“I am.” That was true, I want...