4. April Fools' Joke (2003)

Cuban had some fun with his reputation for squabbling with referees on April Fools' Day in 2003. Cuban got into a shoving match with an actor hired to play a referee during a timeout in the second quarter of a game against the Hornets. Nobody was fooled more than assistant coach Del Harris, who screamed at Cuban before realizing it was a gag. (Glenn James/NBAE via Getty Images )