a. Synonym for deafness and/or mental handicap.
b. A disease which causes retardation in girls and borderline homosexuality in boys. No known cure as of yet.

Guy: Hey what's wrong with that girl, why's she listening to Justin Beaver?
Guy 2: I think she's got Bieber fever
Guy: HAHA, what a retard, probably never heard REAL music in her life.


Mom: Is he okay? What's happening?
Doctor: Maam, I'm afraid we've had to put down your son... I'm sorry, there was nothing we could do, he had a real bad case of Bieber fever. We had to kill him, it was for his own good.
Mom: Oh... Well, I guess it's for the best.
Doctor: Damn right it's for the best, only fags and retard like that little chipmunk.
by tata12 November 16, 2010
An extremely deadly STD or fever. Early forms started showing up in Stratford, Ontario Canada(mid 1993) after a woman by the name Patricia Lynn Mallette allegedly had sexual intercourse with a mentally retarded chimp and produced a high pitched, homosexual, mentally retarded son, known as Justin Bieber. Patricia is known worldwide for creating the disease and there had been many assassination attempts on her after numerous VHS tapes that had videos of her having sex with the chimp. The disease has notably started on March 1st, 1994 but it was a small concern after not many had symptoms. However on January 15th, 2007 a small spike of the disease had started in parts of the US and Canada. Between then and July 2011, over 500 million cases had been reported, all from girls between the ages of 3 and 100 and some rare cases from gay males, with parents becoming extremely terrified of their daughters actions and resorted to murdering them, locking them in a room or closet, throwing them out on the street, selling them or basically doing anything to get rid of the girl to prevent the spread of the disease. As of now, there are no cures. There is no hope for humanity. All we can do is blame that one Canadian woman and the child she produced with the chimp.
Parent - Oh my God, please help my pre-pubescent daughter! She has Bieber fever.
by 33y3yirp4 July 10, 2011
Any sickness that causes loss of pubic hair or testosterone
Alopecia is another word for Bieber Fever
by Elwood Auditore May 06, 2010
The obsession of Justin Bieber.
Sarah: "Omg I am going to marry Justin Bieber."

Matthew: "Oh no Sarah's been hit with Bieber fever."
by Guitarkid916 March 29, 2010
Really horrible, god awful diarrhea. Named for the quality of Justin Bieber's music, which is equally painful.
"Oh man.. I was in the toilet ALL NIGHT, had some serious Bieber Fever. Never want to endure that again."
by UMJP September 20, 2011
A nation wide ailment affecting today's youth, created by disney channel and other terrible musicians like Usher, Ludacris and Kanye.
Ugly ass chick: O my god, justin bieber is so hawt!
Friend: No, you are just plagued with bieber fever.
by michelle obamaa November 16, 2010
"Bieber Fever" a.k.a. "Ear Cancer." Is a type of cancer, thay you can recieve while listening to many Justin Bieber songs. It is very deadly, it can cause death in less than 3 days. It is the most deadliest cancer known to man, however, there is a cure. The cure is to listen to REAL music, like Led Zeppelin, Jimi Hendrix, The Beatles, e.t.c.
Dumbshit Bieber Fan: lolz i haz beiber fevah!

3 days later....

R.I.P. Dumbshit Bieber Fan
Cause of death: Bieber Fever.
by Yourmother33 April 01, 2011

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