Is Justin Bieber's broken heart making him act out?  After his recent breakup with Selena Gomez, he was thrown head first into a marijuana controversy when pics hit the web of him allegedly smoking pot and now the 18-year-old singer showed off his bare butt in an Instagram picture Saturday, Jan. 19.

Bieber deleted the image shortly after it was posted to his official account, though it had already been liked more than 86,000 times and received more than 2,700 comments.

Not sure what would posess anyone to post a bare butt photo online, let alone a celeb?

~Vanessa

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