Knew a girl that had one on her thigh. It read, "you must be so big to ride this ride."
Two guys were bragging about their manhood. One said, I have "welcome aboard" tattoed on mine. The other replied, I have "welcome aboard the U.S.S. Constellation" on mine.
Seriously, what upside is there to getting it? There's only downside IMO. In some situations and come a certain time in your life it is going to be a big pain the butt. They are expensive and painful to remove, kinda like an ex-wife.