The phrase "poor shot" is an idiomatic expression that means someone or something has made a mistake, failed to achieve their goal, or done something incorrectly. It can be used in various contexts such as sports (when a player misses a target), everyday life situations (when someone fails to complete a task properly) and even in politics (when a decision is not well thought out). The phrase implies that the person or thing did not perform up to standard, resulting in failure.