Batshit crazy

Posted by William W. Webb on November 17, 2006

What is the etymology of the phrase "batshit crazy" or "bat shit crazy"?

Does this have something to do with a malady afflicting guano miners?

Or is histoplasmosis or nitrate poisoning involved?

• Re: Batshit crazy ESC 17/November/06
  • Re: Batshit crazy pamela 17/November/06
    • Re: Batshit crazy R. Berg 18/November/06