DEPENDS ON YOUR TIME HORIZON. Ragin' Dave has advice for the transgressive.

When I have people ask my opinions about tattoos, and always say to them "Imagine you're sixty or seventy years old. That skin is sagging, the tattoo is faded, nothing looks the way it used to. Now can you tell your grandkids just why you got that tattoo, and more importantly, is it still going to be relevant when your sixty or seventy? If the answer isn't a definite "Yes" without hesitation, then don't get that tat."

There's a Tom Lehrer line that applies here. Goes something like "It is a sobering thought that when Mozart was my age he had already been dead for four years." Perhaps the patrons of tattoo parlors or the jailhouse artist think the same way.