is when an Aussie (preferably) tries to manoeuvre a huge round of drinks over to his mates at the other end of the pub (without using a tray or aid of a waitress or another friend!). Takes incredible concentration, dexterity and outstanding navigational skill!
Don't worry mate, Sheila can manage on her own. She'll get the drinks over to us without spilling even one drop, trust me. She has mastered the Australian Tai Chi!