Justin Bieber shocked the world — and Demi Lovato — at the 2011 MTV Video Music Awards last night when he showed up carrying a snake in his hand. The pop star then brought out the teenager in him when he explained in a pre-show interview that the boa constrictor’s name was “Johnson.” You can question Bieber’s seemingly juvenile antics all you want. Or, you could turn your attention to a far more pressing issue: the glasses he chose to wore.

But first, last week’s poll: After Britney Spears revealed her…