I came up with "Belieber Tease" - someone who claims to be intelligent, but on further investigation, is a diehard fan of the infamous Justin Bieber. Usually comes attached with various forms of "xxx" or "xoxo" in their social network usernames and IM names. Beliebers facebook posts, tweets, or IM messages also usually come laced with hideous spelling mistakes, and illegible forms of colloquialism and colloquial language.

one who is an obsessive fan of justin bieber.

A person who loves Justin Bieber & beliebes in everything that he can do

To Believe in or be a believer in Justin Bieber.

A fan of and/or believer in Justin Bieber. In case it wasn't obvious, it's a combination of believer and Bieber.

Belieber is a HUGE Justin Bieber's fan. Fan and Belieber is really different, Fan will leave him just because a little thing, but Belieber is not going to leave him eventhough the biggest thing that can break a relationship.

A 'belieber' is a fan girl of teeny bopper sensation Justin Bieber. They are usually between the age of 10-15. A lot of them spend most of their life on Twitter where they:
-Tweet about how much they love Justin Bieber
-Shout-out other 'beliebers'
-Use a lot of tags like #ifollowback or #teamfollowback.

Other twitter users who are not beliebers (and/or above the age of 15) get rather annoyed by the insane amount of 'beliebers' on Twitter and counter act with tags like #Justinbeibersucks.

Beliebers are also well known for fainting at Justin Bieber concerts/appearances. They are also well known for covering their room and school books with pictures of Justin Bieber.

A retard who thinks that Justin Bieber has actual talent and is incapable of understanding that she is useless to mankind and a disgrace to music.