I know this won't sit well with most younger Yeddites, but tattoos don't make anyone look sexier. If you are sexy to begin with, why would you want some 3rd-rate cartoonist spoiling your body? And, if you aren't sexy, grafitti isn't going to help matters any.
Most people who are getting tattoos are simply trying to emulate celebs, who have made it trendy. And celebs are not known for making the wisest life decisions.