Ever had seatmates from hell? On my recent 14-hour flight, I encountered newlyweds who turned the trip into a nightmare, thinking the plane was their honeymoon suite. I had to take matters into my own hands to deliver an unforgettable lesson in airplane etiquette.

I’m Toby, 35, and was eager to see my wife and kid after a long overseas trip. I’d splurged on a premium economy seat, but my peace was shattered when Dave, my seatmate, asked me to switch seats with his wife, Lia, who was in economy.