Declare the winner of the hottest celebrity battles! This week, Tyler and Korey measure up the steamiest and stormiest feuds. Which rapper is fired up in a pizza war? How did Madonna piss off the gays? Help the boys determine the victors of these neck-and-neck matchups, including left shark vs. right shark, Demi vs. SLAY, and the most challenging competition - Justin Bieber vs. the world.