Weekly Chumpdate feat. Michael Phelps, LeBron James, Larry Bird, Jonathan Sanchez, Lance Armstrong, Shawn Marion, Brett Favre, Manny Ramirez, Phil Ivey & Michael Jackson

  Michael Phelps recently set the world record for the 100 meter butterfly at the US Swimming National Championships.  On a related note, scientists have now found that marijuana can serve as both a depressant and a stimulant.