Wardrobe malfunction

When teaching conversation strategies, I often give students hypothetical situations in which to use the new language. For example, after learning "That's too bad" and "I'm sorry to hear that," they may pretend they've broken up with their sweetheart or dropped their cellphone in the toilet. But sometimes life provides real situations to truly demonstrate the usefulness of the language. The other day I was teaching phrases used to express disbelief or surprise, such as "You're not going to believe this...", "Oh my god", "You're joking!", "Are you serious?" and so on. At that point the wrap dress I was wearing - usually very secure - came undone to a roomful of bulging eyes and open mouths. After a few seconds of recovery time, they responded with impeccable English and I could only applaud their proficiency with a beet-red face.