I've always liked this idea of a tattoo created by Boris Vallejo. I have a large scar on my forearm from a compound fracture that was the resulf of a ski jump years ago.
I thought I could have the lizards tail run down my arm and wrap around my forearm, have the hind legs at the top of my forearm all look like a tattoo. Where the lizard hits my bicep is where I'd like it to start looking real and I'd love for it to bite into the largest part of my bicep where it draws a trickle of blood.
I would do it except for the fact that tattoos fade and it would look really crappy inside the first year.