1 general:: Phrase(s): If anything can go wrong, it will. Prov. Every possible disaster will occur, whether you have prepared for it or not. (This saying is also referred to as "Murphy’s Law.") • Fred: Your car should be fine now, as long as the battery doesn’t die. Alan: Then we’d better put a new battery in. If anything can go wrong, it will; so let’s make sure it can’t go wrong.
McGrawhill's American Idioms And Phrasal Verbs