Michael Phelps Dishes on Diaper Duty, and If He Would Ever Do 'Dancing with the Stars'

Michael Phelps is now the most decorated Olympian of all time. Fresh from winning five more gold medals at the 2016 Rio Olympics and announcing his retirement, the swimmer chatted with "Extra's" Charissa Thompson as he stepped out with fiancée Nicole and son Boomer for a "Call of Duty" event in Los Angeles.

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