The Outback (Austalian slang) refers to the large expanse of uninhabited/sparsely populated centre of the Australian continent.
More than 85 percent of Australia's 22 million population live in towns and cities on the eastern and southern coasts. For this portion of the population, The Outback refers to just about anywhere more than an hour from the coast.
The Outback has no discernable boundaries or limits, it exists on no map, but is easily recognisable by most travellers as being the places where you can drive for a few hours without seeing any towns or houses.

When you eat dirt for the first time and leave your family to build a shack in the woods

A sexual position where your unassuming woman gets in the doggy style position. Instead of shuffling over to take are of biz, you get a running start, jump on her back and sink your teeth into her shoulder imitating a lion catching a gazelle.

A BC heaven where many people go year round. The nicest, most beautiful, warmest, funnest place ON EARTH. The place you go to that will change your way of thinking, that will leave you dreaming and if it's lost, it can never be replaced. A place where you laugh hysterically, swim, tan, cliff jump, dance, play sports (soccer) and have the best time of your being. :)