A Canadian swimmer sports an Olympic rings tattoo at the Aquatics Centre before the start of the London 2012 Olympic Games in London July 27, 2012. (REUTERS/Jorge Silva)
The butterfly tattoo of Vanessa Ferrari of Italy is seen as she attends a gymnastics training session at the O2 Arena before the start of the London 2012 Olympic Games July 26, 2012. (REUTERS/Dylan Martinez)
Khatuna Lorig of the U.S. reaches for an arrow from her quiver sporting a picture of an American bald eagle in the women's archery team quarterfinals at the Lords Cricket Ground during the London 2012 Olympic Games July 29, 2012. (REUTERS/Suhaib Salem)
Freestyle wrestler Jordan Burroughs stretches while posing for a portrait during the 2012 U.S. Olympic Team Media Summit in Dallas, Texas, May 15, 2012. Burroughs' upper back tattoo features his initials with wings. (REUTERS/Lucas Jackson)
A tattoo of the Olympic rings is seen on a member of the U.S. national Olympic swimming team during a training session at the main pool of the Aquatics Centre before the start of the London 2012 Olympic Games in London July 26, 2012. (REUTERS/Jorge Silva)
France's Amaury Leveaux puts on his goggles during training at the main pool at the Aquatics Centre before the start of the London 2012 Olympic Games July 26, 2012. (REUTERS/David Gray)
Sporting the colors of the country they represent is gratifying enough for most Olympic athletes. For others, an ink gun provides the opportunity to express themselves in a more permanent way.
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