What's the craziest thing you have ever seen someone do on public transit?
Given that the exact same question is the current top post but for driving instead of transit, I feel this question was needed.
My answer: I saw some guys hooking up a Raclette Grill to the outlet in an otherwise empty German intercity rail waggon. They had it unpacked in one of these 4 person seats with a small table. No idea if that could work or if draws too much power from the board net. I just headed on to the next waggon.
I played a club sport in college. Nothing fancy and I was a fine but not top-of-the-roster player. Several of us rode the city bus to practice every day.
There was often a woman on the same bus as us. She obviously had some mental and physical challenges. She would chat with other passengers at times, and eventually figured out many of us were teammates. She started getting into it, asking us who was the best player and if we were going to win "the big game". (There was no "big game" ever upcoming, it was just a question she associated with sports and asked frequently). One time she brought her autograph book and asked us all to sign it.
When we did finally play in a "big game", it got posted on YT. So I showed her a bit the next time we were on the bus together. She was pretty excited and asked for another round of autographs now that we were TV famous.
She never came to a game, I think a disruption like that to her routine might have been really hard on her, but it was fun having such a non-judgemental, joyous fan.