She really had a good laugh after she realized her mistake--the first one I heard from her. A typical Monday warm-up is: "So how was your weekend?" Her: The weather was perfect! I went to my parents' swimming pool and had a bath. Me: ... Her: (Continues) It was my second bath in a year! Me: What do you mean "it was my second bath in a year"? Her: The water has been cold, but now it's warm. Me: So you went swimming? Her: Yes. Me: It's better to say "I went swimming" because when you have a bath, you have soap... Her: Oh! In a shower! (Starts laughing). Me: (Laughs with her). Your parents wouldn't like that, I think.