Colloquialism indicating that someone is of muddled intellect. Synonymous with "lights are on, but nobody's home" or "a few cans short of a sixpack".

Also a really good Aerosmith album from 1975 and the title song from it, later covered by REM. Containing:

1. Toys In The Attic
2. Uncle Salty
3. Adam's Apple
4. Walk This Way
5. Big Ten Inch Record
6. Sweet Emotion
7. No More No More
8. Round And Round
9. You See Me Crying