What is Australian Boomerang?
1.
The art of taking a poop into another persons anus. Then this person will poop it back into you, thus coming back to you like a boomerang.
Guy 1 " dude, I heard you did an Australian Boomerang last night?"
Guy 2:" Totally, except Greg had diarrhea"
Guy1 : " EWWWW"
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5 - Not quite the worse thing you could do to society, but still you'd be better off dead because generally the only tolerable fash..