I’ll go first: “You have to have children when you’re young,” told to me when I was in my late 20s, with no desire to ever have kids, and no means to support them, by someone divorced multiple times with at least one adult child who does not speak to them.
Also: Responding to “How do I deal with this problem?” questions with “Oh, don’t worry about it, it’s enough that you’re even thinking about it!”
Someone did that to my whole project. I had catefully migrated all the source control to a new and improved system. Out boss decided which project went into which organization.
Some idiot went and intentionally deleted a project I was meant to do maintenance because he had decided all by himself that it wasn’t meant to be there.
I had to do a long train ride to the idiot’s office for a training and when he told me what he did (proudly!) I gave him the sort of verbal bollocking I have never done before or since.
To the point where he contacted our boss to complain. I got a call from my boss to excuse himself on behalf of the idiot.