isn't there a fantasy novel about this? it is on the edge of my tongue. bum-faced memory - when you get to my age (nearly 70) you know it is in there, but it is

isn't there a fantasy novel about this? it is on the edge of my tongue. bum-faced memory - when you get to my age (nearly 70) you know it is in there, but it is often infuriatingly difficult trying to retrieve it.