Green’s Dictionary of Slang

(later use UK black) a general excl.

c.1850		F.M. Whitcher Widow Bedott Papers (1883) 28: Six months! murderation!
1942		L.A. Times 13 Sept. 107/4: A paroxysm of mirth seized Freddy [...] Murderation!
1986		R. Hewitt White Talk Black Talk 129: murderation – general purpose exclamation.