Oh wait! I'll get one of those guaged piercings in my bottom lip. When it's big enough, I'll have a custom made turbine lip ring that spins every time I exhale.
If you don't already have a car part tattoo, prepare to answer the same question over and over again when people see it: "what is it?" My tat involves a piston, and it's staggering how many people don't know what a piston is. I suppose it's still better than a dragon or something made to look like a flesh wound.