On Jan. 31, 2009, a photo taken on Nov. 5, 2008 of Michael Phelps smoking a bong at a party in Columbia, South Carolina appeared in several tabloids and spread like a wildfire through the media. Phelps was quick to call his use of marijuana "bad judgement" and a "mistake."
He's since gone through rehab for alcohol abuse after his second DUI in 2014, so it's probably fair to say Phelps has put the bong down.
Phelps won a total of 28 Olympic medals – 23 of them gold – starting in 2004. At the Rio Olympics in 2016, he earned five more gold in the following events:
• men's 4x200m freestyle relay
• men's 4x100m freestyle relay
• men's 200m butterfly
• men's 200m individual medley
• men's 4x100 medley relay