1 definition by hir0

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.
by hir0 August 20, 2011
Get the guano crazy mug.