Is it appropriate for Japan to wear pajamas to go out?

Japan should not wear pajamas to go out.

Japanese will never go out in pajamas, they will think it is rude.

Japanese people are very particular about clothes, and they have different clothes on different occasions. You need to wear work clothes at work, but you should wear home clothes at home. Of course, you should wear pajamas to sleep, casual clothes to travel, sportswear to exercise, and formal clothes to attend weddings.

The rules are complicated and difficult for foreigners who have just arrived in Japan to understand. Maybe they will make a lot of jokes.