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!”
“Think harder.” You are already thinking, trying to come up with an answer and aren’t able to. What does “think harder” even mean?
You gotta do it like in the movies. Squeeze your eyes shut and poke your forehead with both hands. It unlocks the secret “big brain” mode.