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2.
A not-so-common Australian farewell.
See you Monday, alright hoo roo.
by Ash December 07, 2004
 
1.
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).

"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"

by Uncle Walter Esquire June 11, 2009
 
3.
An expression for a farewell or goodbye
For someone leaving: "I'm off now, hoo roo"
by anonymous October 16, 2004
 
4.
A way for lower class australians to say good bye, common in bogan culture
hoo roo ya dirty bastard, enjoy the slammer
by sam teeee November 02, 2011
 
5.
An Australian way of say goodbye. Originates from the practice of lonely guys out in the bush, who after meeting and talking of their plight would often say goodbye before going off to "Hoo a Roo". Roo is a shortened name for the Kangaroo and Hoo comes from the sound said Kangaroo makes when surprised from behind.

Guys would say "Time to Hoo a Roo" on parting and this gradually became shortened to Hooroo.
Bruce: Crikes it's getting late, mate, I should probably get back.
Shelia: No worries, mate, see you for the shearing competition tomorrow. Hooroo.
Bruce: Hooroo
by Boonaroo September 23, 2011
 
6.
An aussie way of saying "goodbye"
Hooroo stinky poo.
by Anf March 12, 2004
 
7.
goodbye - origin unknown, possibly Australian
"see you later"
"hooroo"
by gary sml January 13, 2003