In 26 years of business travel I’ve seen and experienced a lot, from bird strikes to passengers self-upgrading and even one who brought their own alcohol on board and refused to stop drinking it even though they were in first class and the flight attendant was happy to bring them another. But I don’t think I’ve ever seen anything quite like this: a passenger with a water bottle in their seat back pocket that was bubbling and had a tube sticking out of it.
On closer inspection, though, it wasn’t just water inside the bottle. There were fish.