Earlier this week Justin Bieber (yeah that pop singer) challenged Tom Cruise to a fight in the Octagon! Now, Well it looks like Tom has finally come forward and accepted the challenge. OK let's be real here, That's NOT Tom Cruise! But it sure if funny! And just so you know, I'm not gonna sit and pick on Justin for this challenge, trust me there is enough negativity surrounding this "challenge" out there already. And as you'll see in the second video, Justin admits it was a joke and there's no way he'd actually win.