I’m so sorry, but everyone puts clop and crap in this comic, so I wanted to show you all the face of TRUE horror.  
Celestia may very well have Twilight executed for having such a thought. Liking Justin Bieber is one of the few executable offenses in Equestria that can’t be solved by singing a song about it. Actually singing about it makes it worse in this case.  
(I wish I could know how many down-votes I got from Bieber fans compared to how many I got from people that hate him too much to up-vote anything with him in it. You know. Just curious.)