I hate to be the bearer of bad news, but shouldn't a person's head implode if something is too big for it? I mean, if the 'thing' is originating from outside the head, the pressure of its sheer size will make one's head implode as opposed to explode. Now if something originates from within one's head and it gradually expands in size, then a head could technically explode from the spatial displacement. For some reason I don't think the UFC media team considered scientific fact when they made this new UFC 165 promo titled 'It's So Big.' Technically these heads should implode or the title should be something along the lines of 'This fight will make your brain swell with so much excitement that it will make your head explode.' There, that would actually be a better title -- although it wouldn't necessarily fit in the character allotment YouTube gives for titles. Check it out.