I met Kristin and Jason at the 7th Avenue Street Fair in Park Slope on Father's Day.Street fairs in New York City generally occur in the summer months and, to an inkspotter like me, they are heaven on earth.Well, perhaps I exaggerate. They are also hot, crowded, and dangerous. I have seen many a fair-goer clipped by a slowly-moving baby stroller. But I digress.There were tattoos aplenty at the