Green’s Dictionary of Slang

hoopersootics n.

(Aus. teen) term indicating extreme surprise and the accompanying shock.

[Aus]Argus (Melbourne) 15 Nov. 7/2: Further inquiry revealed that ‘I nearly had sooperhootics’ is a euphemism. It was condescendingly explained to me that this is an indication of extreme surprise. Hoopersootics, the mystifying word used in the title to this article, is exaggerated sooperhootics.