I have cut that out if another thread because it reminded me of my LHR-JFK last week where a woman in CW was laughing incredibly loudly with her headphones on. CW was only half full and was a sea of calm, people working, efficient crew, etc. all was perfect until screams of laughter came from seat 15A. I had decided to watch a latest release film I hadn't seen so my headphones went on for a couple of hours but when they came off she was still laughing hysterically.

Although I'd rather she wasn't laughing quite as loud as she was I can't say it bothered me immensely, but I could sense that the person in 15E was agitated and kept getting up to peer over to 15A. When doing part of their service even a couple of CC peered over but didn't nudge her to say that she might be disturbing other passengers.

Other than the inevitable screaming baby, what's your worst 'noisy neighbour' horror story?