The Rapper: Birdman
The Bet: In June 2011, Baby put up $2 million on the Miami Heat to win the 2011 NBA Finals.
The Result: He lost. The Heat, of course, got dismantled by Dirk Nowitzki and the Dallas Mavericks in the best-of-7 series and LeBron James, Dwyane Wade, and Chris Bosh lost in their first trip to the Finals as a trio. As a result, Birdman had to force Lil Wayne to release his new album, Tha Carter IV, way ahead of schedule to pay off his gambling debt. Er, just kidding. But, wouldn't that explain a lot?