not know what (one is) missing(redirected from not know what one's missing)
not know what (one is) missing
To fail to realize how great something is because one refuses to try or participate in it. This movie is really interesting—you kids don't know what you're missing! A: "I've always been too nervous to try sky diving." B: "You don't know what you're missing. It's the thrill of a life time!"