Must be Smoking "Good" Stuff

Michael Phelps, the hero of the 2008 Olympics, is photograhed smoking marijuana. Okay, not a good image, but Presidents Bush and Clinton did it.  But wait---just a few days later, Mr Phelps congratulates the Arizona Cardinals on their "awesome victory" in the Super Bowl by saying, " The Cardinals really tore it up last night." The problem was that the Pittsburg Steelers won the game. What was Mr. Phelps smoking Sunday night?