"Joshua and I tried to engage Joy in conversation several times during the journey to Kabul, but she was cranky and abrupt and often just rode away from us. "Probably depressed that she's not torturing me," I speculated. "I can see how that might bring her down," said Joshua. "Maybe if you could get your camel to bite you. I know that always brightens my mood." I rode on ahead without another word. It's wildly irritating to have invented something as revolutionary as sarcasm, only to have it abused by amateurs."