When I worked at the ‘Atenisi Institute, a small and poor university on the outskirts of Nuku’alofa, the capital and indeed only city of the Kingdom of Tonga, most of my Friday evenings began the same way. I would come home from my last class of the week, shower and change into a fresh tupenu (Tongan skirt) and then walk out to buy a bag of drugs with my employer’s money.