I thought you meant like getting shots.
No tattoos, I want something I've designed, but haven't made anything I'd actually want forever. Although I had an idea to get a tattoo of a watch with a compass on the side and just leave the faces blank so if anyone asks "what time is it?" or "where are we?" I can say "let me look at my watch/compass", stare at it for a while, and say "It's broken!" or just pull out a marker and draw what time it is.
No piercings either, although I've been thinking about having someone skewer my junk.
I DO have an awesome bone growth on my left shoulder where I had an A/C separation and it didn't heal properly though. Might get that tattooed with and eyeball or something.