Your sense of humor tells on you. What you laugh at is a map of what you’ve lived through.

Humour is shaped by what you have been through, which is why it travels badly between people who have lived differently. A joke lands because it recognises something: a kind of family, a kind of job, a fear everybody has privately had. It is also why the darkest laughs often come from the people who had the hardest time.

Notice what made you laugh hardest recently and what it was actually about. Then notice whose jokes you never get, because that gap is a neat little map of different lives. Asking somebody why a thing is funny to them is a quick way to learn about them.