What jokes have you made because you misunderstood others?

Once I went to a restaurant with my colleagues after work. While waiting for the elevator, I met several male colleagues coming out of the stairs and asked you why you didn't go to eat. A male colleague replied: Fitness! I heard wrong and whispered to another female colleague: steamed stuffed bun? Celery? My colleague burst out laughing. (Cai is the fourth voice because of Henan accent) I thought he said that lunch was steamed stuffed bun and celery, so I didn't like it. Coincidentally, when I went to the restaurant, I saw steamed buns and fried celery.