Back when I was still on Reddit, I made a comment on a chess sub saying that in chess you are not allowed to make your king "commit suicide" to explain how a stalemate works. One day later I got a message about suicide prevention because someone flagged me for promoting suicide.
One of my favorite moments on reddit was spotting a bot that spouted unrelated nonsense. I checked the comment history and found users responding earnestly to the nonsense. While it was hilarious, it was also quite sad, the state of those people.
One of the funnier ones for me was a “your words are in alphabetical order” bot replying it to the haiku-bot that replied to the human first. The alphabetical-order bot didn't reply to te the human as well; but to the haiku-bot, mind you!