Justin Bieber recently tweeted something quite odd, “I wanna challenge Tom Cruise to fight in the octagon. Tom if you dont (sic) take this fight your (sic) scared and you will never live it down. Who is willing to put on the fight? @danawhite ?”. According to the tweet, Bieber wants to have a one-on-one with the legendary Tom Cruise, which was taken to be a joke at first. However, it has been reported by the co-CEO of UFC and Dana White himself that Bieber would actually fight Cruise, if the actor was up for it. How good of an idea that is, is up to debate. How a popstar would win against Tom Cruise, who has been doing his own stunts for decades, is beyond us.