This is used to describe a set of behaviors that most schizophrenics, bipolars, paranoids, people with multiple personality, ect. tend to display.
I was with this chick last night. Everything was going great upto the point she hit that peppa. Then she went KAT KRAZY, and all the other people in her head commenced to wrecking the place.
the main character in a 20s comic strip of the same name. one of the greatest fictional people ever. loves bricks, and mice.
a twenties comic strip by george herriman. widely recognized as the greatest thing that genre has produced. characterized by "Dadaist" drawings and whimsical speech.
if you have a mind, you should be reading krazy kat