1 definition by Mr. Kang of Kos

A condition in which the voice of a young boy does not mature from a high pitched squeal, akin to the voice of Justin Bieber. This may be followed by a sudden obsession in Bieber's music and subsequent fandom. Extreme cases may also result in a miniature penis and/or mangina.
The 17 year old child with the ungodly high-pitched voice has a bad case of Bieber Syndrome
by Mr. Kang of Kos June 22, 2010

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