not know what (one is) missing(redirected from missing not know what he'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 skydiving." B: "You don't know what you're missing. It's the thrill of a lifetime!"