Truth said in jest?

This weekend Justin Bieber was the host and musical guest on Saturday Night Live.  I actually thought his episode was fantastic.  The Biebs was not above taking shots at himself though, as evidenced when he played the President of the Miley Cyrus Fan Club on the spoof show "The Miley Cyrus Show."  While appearing, he made a joke acknowledging that he let himself down when he smoked marijuana, and promised to never do it again.  Check it out below!