Justin Bieber is the latest celebrity to do the bottle cap challenge, he posted the video of him doing his best karate move on a bottle, then challenging his wife, Hailey and Tom Cruise. In his bottle cap challenge video, Bieber says "This could be Tom Cruise's head," before doing a spin kick that sends the bottle cap flying. Earlier this month Justin challenged Cruise to a match in the UFC octagon and even was in talks with the UFC's Dana White. Tom Cruise has yet to respond to Bieber’s request for a rumble in the octagon or the bottle cap challenge. Would Tom Cruise be better at the bottle cap challenge or a UFC fight?