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- 1World's Dumbest Motorheads 7June 7, 2012
- 2World's Dumbest Brawlers 13June 14, 2012
- 3World's Dumbest Thrillseekers 7June 14, 2012
- 4World's Smartest Inventions 8June 21, 2012
- 5World's Dumbest Dummies (Themeless)June 21, 2012
- 6World's Dumbest Outlaws 8July 12, 2012
- 7World's Dumbest Performers 13July 19, 2012
- 8World's Dumbest Thrillseekers 8July 26, 2012
- 9World's Dumbest Partiers 20August 2, 2012
- 10World's Dumbest Hillbillies 5August 9, 2012
- 11World's Smartest Inventions 9August 16, 2012
- 12World's Dumbest Dummies 2 (aka Themeless 2)September 6, 2012
- 13World's Dumbest Brawlers 14September 13, 2012