drunk, crazy, destructive, and bad, from NickelBack's "Burn it to the Ground"

The phrase came from Indian tribes who slept in caves. After long periods of exposure to the caves filled with "batshit"the Indians would start losing their minds. Some hyroglyphics illustrate people eating other humans including the face.

A type of crazy beyond normal crazy. More "out there", "in their own world" kimd of crazy.

When bats come at you and you get so scared you shit yourself

when someone is a tad bit coo coo and was probably dropped a hundred and three times as a child