I once knew a kid who got the worst tattoo of all time. A girl he loved kept things from him and they broke up. To mark his commitment to "truth" (which he mistook for "honesty") he picked an image of a Buddhist Dharma wheel that looked like a ship's steering wheel. He got it, 12 inches across, on his side. By an amateur tattoo artist with a kitchen ink gun. Moral of the story: think before you ink.