AKA:Me And My Big Mouth
Stock response to many an egregious Stock Phrase, especially What Could Possibly Go Wrong?. Essentially Lampshade Hanging by the Genre Savvy of Tempting Fate. Simply put: One should never say that it can't get any worse, because sooner or later, it will. Usually preceded by frantic, ignored pleas of, "Don't say it, don't say it, don't say it... You Just HAD To Say It, [...] [tvtropes.org]