I went to the wrong dormitory at night and said hello after I went in. What jokes have you made because of stupidity?

Once, a man in our building got drunk after going out to a party. After returning to the dormitory, I fell into bed and slept. As a result, I woke up the next day only to find that I slept in the wrong dormitory. The funniest thing is that their roommate didn't find out and talked to him. Then I responded to them with wine words because I was drunk.