when the voice of someone you have never seen suggests that the person is overwhelmingly physically attractive, only to find, once you actually see them, that their physical appearance is not necessarily their best attribute.
(Used mainly in reference to singers whom one hears sing before they actually see them).
Person 1: I googled that singer we heard on the radio.
Person 2: Is he as hot as he sounds?
Person 1: No, he totally death-cabbed us.