Ever been given change in gum?

As I lined up to do some printing, I saw a student pay the owner for her printing and then him giving her some gum. "How nice of him," I thought, "he gives our free chewing gum!" When it was my turn to print I vaguely remembered being in a taxi and seeing the taxi man give some gum to the man who was being dropped off. It suddenly occurred to me that this must be a form of change. "Do you give gum as an equivalent to one noutlrum?" I asked the owner, he responded with a smile. I paid 30 N for my printing instead of the cost which was 27 N. "Do you also want some gum?" the owner asked laughing. Like a child eager to receive candy I nodded in excitement. I don't know about you, but getting strawberry chewing gum instead of pieces of paper sounds much more interesting to me!