Hooroo is a distinctively Australian way of saying “goodbye”.
The "truly wondrous fantasmagorically splendiferously magickal word hooroo" (credited to someone's
Uncle Wally) echoes two likely sources.
It's a bit of a joyous
exclamation, as in "Hooroo! hooroo!
hooray!" (Darby O'Gill), and it's also something of an owl's hoot, as in "the proper hooroo, hooroo" (
The Sword in the Stone).
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"For my part, I do believe I should go quite insane, were I to
live in {a} Land where people wandered around
screaming, 'HOOROO' at one-
another". said Werewolfy"
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