Murphy's law means the pessimistic principle that anything that can go wrong will go wrong. In poetry, it can introduce comic fatalism, modern frustration, or a speaker’s sense that the universe is mischievously hostile. The idiom suits poems about travel, machines, bureaucracy, domestic mishaps, performance, or repeated disappointment. It may be humorous, but it can also express deeper anxiety about chance and control. A poet might use it to contrast human planning with the unruly behaviour of reality.

Murphy’s law states that if something can go wrong, it will. In poetry, it can provide comic fatalism, modern irony, or a framework for chaotic misfortune. It suits domestic mishaps, travel, technology, bureaucracy, and tragicomic narratives. Students should note that the phrase is less about strict law than expectation shaped by experience. It can be contrasted with providence, fate, bad luck, and comic inevitability.