Top Definition
A quaint but usefull Australian term of excitement. Mostly used by Australian men over the age of 80 and only after a good lie down before 3pm. Etymology uncertain but was in common usage before Twitter.
DAVE: What's that you've got there Bob?

BOB: It's a new device what I got that that wakes me up at 8 o'clock, boils the kettle and pours me a cup of tea.

DAVE: Whackothadidlio!
#whacko #australia #whackothadidlio #tea #bob #dave
by artheretic February 26, 2010
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