One good way to prove that you are a Jock Strap Jerk is to show poor sportsmanship. Here’s a video showing the top 10 worst examples of bad sportsmanship to ever hit the field, court, or rink.

Boxing promoter Don King has managed to put himself on a shady pedestal in the world of boxing. Someone has graciously provided a summary of his sleazy escapades on Wikipedia:
Don King has been a lightning rod for controversy throughout his career. He has been the subject of several lawsuits by boxers he managed who alleged [...]

I think I would be remiss if I didn’t mention the star bad boy of boxing. This guy has made not only a habit, but a lifestyle out of being a class A jerk. What hasn’t this guy done? Drugs, rape, prison, and of course the famous ear incident with contender Evander Holyfield.
His latest mention [...]