I have seen such a mind-reading joke before, and finally forgot who sent it. Thank you.

Two people were eating in a restaurant and walked into a scholar-like person. So there were two people guessing what the scholar had done. There was an argument after the guess, and it was impossible to decide who was right or wrong. Then the scholar went to the toilet, so one of them followed. The man asked the scholar, what do you do? I am a logician. What is a logician? I don't know at the moment. Let me ask you a few questions, and you will understand. Do you have any goldfish? Yes If you keep a goldfish, you must have a fish tank or fish pond. Yes, I have a fish pond. You have a fish pond, which proves that you have a big garden at home. Yes, there is a big garden. You have a big garden, so your family must have a big house. Yes, yes, there is a villa. More than twenty houses! You have more than twenty apartments, so there must be many people in your family. Yes, there are six people in my family, my wife, my four children and I live in it. You have four children, which proves that your sex life must be harmonious. Wow, this is logic, awesome. You can see that my sex life is harmonious from whether I have goldfish or not. This man came back and said to another man, I know what he does. What? He is a logician. What is logic? I don't know at the moment. Let me ask you a few questions, and you will understand. Do you have any goldfish? Don't! Then your sex life must be out of harmony.

A slightly different approach is expected.