A popular style of tattooing called "black and gray realism" has ... there were homemade tattoo machines with parts from big pens, needles and old-school tape players. And if there wasn't ink ...

Tattoos are no longer taboo. According to a Harris poll, about half of American Millennials say they have at least one, and so do a third of Gen Xers. Once you have one, data show, you'll get more.