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Michael Phelps did not collect any Olympic medals Monday night in Rio de Janeiro, but he did deliver what will undoubtedly be one of the lasting images of the 2016 Summer Olympic Games.

Prior to a semifinal race in the 200m butterfly, Phelps was caught by cameras staring a hole through South African rival Chad Le Clos, who beat Phelps to win the gold in the event in London.

Twitter exploded.