As fit as a fiddle, Get a Charley horse, In the pink, Lights are on but no one 's home, Six feet under.Psychonomic Bulletin & Review2007, 14 (3), 527-533http://www.psychonomic.org/psychonomic-bulletin-reviewYou can subscribe, download or copy, or get on your mobile device any of these podcasts.Also listen on Stitcher Radio Networkhttp://www.stitcher.com/podcast/lewis-sandler/origin-of-american-idioms-and-slang?refid=stpr