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Caption THIS! Athletics

LONDON, ENGLAND - AUGUST 08: Christophe Lemaitre of France competes in the Men's 200m Semifinals on Day 12 of the London 2012 Olympic Games at Olympic Stadium on August 8, 2012 in London, England. (Photo by Alexander Hassenstein/Getty Images)

And the winning caption is: "What the hell was that? Didn't see Bolt coming." sent in by Aristotle Pollisto.