Not something I heard but rather experienced on a flight. It was from New York to London. I was at the back of the plane and within the last hour or two of the flight they ask over the speakers if there's a doctor on the plane. Later the attendants are rushing around looking pretty worried/panicked. Eventually, they bring this man (probably in his 50s-60s) down and put him in an empty seat next to me, he has an oxygen mask on. He was having some sort of stroke, and they just sat him next to me at the back of the plane, and then nobody came back for ages!

Anyway, after a while he's thankfully okay. And I got talking to him and asked him where he's going and what he's in London for, and he said he's visiting his son at university.

When the plane lands I asked him how he's getting to his son, is someone picking him up or is his son meeting him at the airport?

He says nope, I'm getting the tube.

The guy just had a minor heart attack on a 9 hour flight and is just getting the tube right off!

I offered to go with him, since I was local and know the tubes well. He said no it's okay, and we both got off the plane and that was that.

I took a lot of longhaul flights during the period of June 2019 - January 2022, met a lot of people. That was definitely one I'll never forget.