The Summer Olympics are a time of pride and joy. Representing one’s country and winning medals are the highlights of many athletes' careers and make them national heroes. Unfortunately for some other Olympians, it is a two-way street. Mess up on the world’s biggest stage and you can gain pariah status in a heartbeat. The list of Olympians who have disappointed in one way or another is lengthy and often the failures are more memorable than the winners.

From doping to poor sportsmanship to everything in between, the Summer Olympics have brought out the best and worst of the world’s greatest athletes. We collected the best of the worst and here are the 50 Biggest Fails in Summer Olympics History.

RELATED: The 25 Hottest Athletes on the 2012 U.S. Olympic Team