guano crazy 

A polite way of saying bat-shit crazy.

(Guano is the polite term for bat feces.)

quoted from Sevastian Winters, Yahoo contributor: 8/18/2011

I generally give Michelle Bachmann the benefit of the doubt, but I still think she is guano crazy.

guano crazy by hir0 August 23, 2011

bat guano crazy 

A more polite, euphemistic, SFW way to describe someone who would otherwise be bat shit crazy

- Dude, so you ex threatened to break your necklace while you were sleeping?

- I know! I told you she was bat guano crazy!!!

- No wonder you dumped her, she IS bat guano crazy... just send her sorry ass to Arkham Asylum already!!!!

bat guano crazy by el patron himself October 13, 2010