coo-coo

cuckoo

Crazy. There's a guy on our corner who shouts about the end of the world; I think he's a little cuckoo.
Farlex Dictionary of Idioms.

coo-coo

and cuckoo
1. mod. unconscious. I socked him on the snoot and knocked him coo-coo.
2. mod. insane. How did I ever get involved in this cuckoo scheme, anyway?
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions
See also:
  • on one's
  • on someone's
  • (Have you) been OK?
  • pillow-biter
  • out of one's
  • (I've) got to go
  • #dead
  • save someone's skin
  • (something) blows
  • other than
References in periodicals archive
Giant Greedyguts has gobbled up all the animals in town except one - Moomoo, the family coo-coo of Dame Daisy McCrazy and her two boys Jack and Archie.
Your worst fears used against you Orwell's big brother is here, his sister too Nightmare, silly mare - moo, con-dem-nation Is coming to you Cameron gave Nick a Clegg-up Clegg hasn't let 'em down Labour's joined the "If you can't beat them Join them" clan, coo-coo Buddy can you spare a room?
The famous "Coo-Coo Band" from the late-nigh show of host Slavi Trifonov performed for the graduates.
Little Tavi, pictured, who describes herself as "tiny dork that sits inside all day wearing awkward jackets and pretty hats" has four million readers who I thought should know better, following her blog, Style Rookie, and the coo-coo fashion world is well and truly seduced.
and it disnae taste like the bottom of my cage." A librarian tells Derek to keep the noise down but the angry bird challenges the librarian to a fight with the bizarre catch-phrase "coo-coo".
Not all cuckoos say coo-coo, just as not all birds called kingfishers hunt for fish.
1959 -- In the April issue Coo-Coo Claims file: Seems that a 16-year-old girl was hired as a babysitter while a Minneapolis couple attended a New Year's Eve party.
Ryan Elliott, a Eugene collector and dealer, said the most valuable comic in his 100,000-book collection is Coo-Coo, drawn by legendary Disney artist Carl Barks.
1961 -- From the April coo-coo claims file: "The insured had a female dog in heat.
1965--From the "coo-coo" claim file: The March issue (25 cents; $2.50 annual) reported a claim received by Lafayette, Ind.-based Meritian Mutual Insurance Co.