To turn the topic a little (in true SiT tradition) are most of these terms truly backpacker, or are they the result of backpackers picking up stuff used by local expats
Which is the problem I was having with the idea - whether a term was truly backpacker. I could confidently say that the backpackers I knew from the Southern hemisphere may use a particular turn of phrase, but I couldn't actually tell (with a couple of exceptions) whether they were used only by backpackers, or -more likely in our case - by people from certain countries and through sheer numbers make it appear more common than it actually is. NZers and Australian's have a tendency to shorten words and to use slang and colloquialisms like they are going out of fashion. So, if a backpacker uses a particular term I couldn't honestly say if it was because of our current situation or simply the culture where we (the collective we) came from.

