bat-crap

Adverb

 * 1) * 2008 March 17, Chuck Lorre, Lee Aronsohn & Dave Goetsch, "The Cooper-Hofstadter Polarization", episode 9-1 of The Big Bang Theory, 00:07:55-00:07:58:
 * Leonard Hofstadter: Not to mention, Sheldon is bat-crap crazy.
 * Leonard Hofstadter: Not to mention, Sheldon is bat-crap crazy.