What happens if you are one of the rudest Baristas around, who apart from sly insults and backhanded compliments, also give far too much change back to your customers? Well, if the customers are Australian, they'll alert you to your mistake, because Australians are an honest lot. And they deserve credit to match.

We built our own coffee stand in Melbourne's busy CBD and instructed our Barista to give back $5 too much change. Then to make it even harder for customers to be honest, we made him obnoxious.