A female from the age of 18 upwards (or in some cases a male) who has an unnatural, creepy and quite frankly unhealthy obsession with canadian singer Justin Bieber. It can also refer to someone who is crazy enough to listen to his music.
Female A: Hey I went out and bought like 10 copies of the new Justin Bieber album.
Rational Thinking Male: You are such a bieberphile
Rational Thinking Male: You are such a bieberphile
by Ashton J Brown April 10, 2010
Person 1Dude I just love Bieber
Person 2But your 35
Person 1Yeah so what
Person 2Your such a Bieberphile
Person 2But your 35
Person 1Yeah so what
Person 2Your such a Bieberphile
by owzDevil December 27, 2011