The police cannot protect the citizen at this stage of our development, and they cannot even protect themselves in many cases. It is up to the private citizen to protect himself and his family, and this is not only acceptable, but mandatory. - Col. Jeff Cooper.
I do not have any yet, but I am thinking of getting a few. I have studied sharks since I was about four years old so I wouldn't mind getting something like this on me. (not the same exact one, but the details are amazing in that tattoo).
I am also thinking of getting a couple logo's of my favorite bands danzig and the misfits.