The full saying is actually "Curiosity killed the cat, but satisfaction brought it back," which implies that while curiosity might lead to trouble, it also has the potential to bring knowledge and understanding. However, the shortened version is more commonly used to convey a sense of caution about being overly curious. It serves as a reminder that there are situations where it's better to refrain from asking too many questions or meddling in affairs that may not be one's concern.