World's Dumbest Daredevils 11
Episode: 9x01 | Airdate: Sep 16, 2010
Episodes
World's Dumbest Drivers 20
Episode: 9x02 | Airdate: Oct 21, 2010
World's Dumbest Brawlers 4
Episode: 9x03 | Airdate: Oct 28, 2010
World's Dumbest Partiers 12
Episode: 9x04 | Airdate: Nov 4, 2010
World's Dumbest Criminals 23
Episode: 9x05 | Airdate: Nov 11, 2010
World's Dumbest Daredevils 12
Episode: 9x06 | Airdate: Nov 18, 2010
World's Dumbest Brawlers 5
Episode: 9x07 | Airdate: Dec 2, 2010
World's Dumbest Performers 5
Episode: 9x08 | Airdate: Dec 16, 2010
World's Dumbest Drivers 21
Episode: 9x09 | Airdate: Dec 23, 2010
World's Dumbest Criminals 24
Episode: 9x10 | Airdate: Dec 30, 2010
World's Dumbest Partiers 13
Episode: 9x11 | Airdate: Jan 6, 2011
World's Dumbest Performers 6
Episode: 9x13 | Airdate: Jan 20, 2011