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18.
noun.

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.
a)

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.

b)

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
 
43.
an illness affecting little girls, and some guys,to become addicted to the high pictched voice of Justin Bieber.. and an attraction to:

-gayness
-skater hair
-immaturity/ lack of puberty
-American wannabees
-little boys

may result in lack of anything normal and becoming homosexual or insane.
Person 1: dude, she just b*tch slapped my mom for saying she didn't like Justin Bieber.

Person 2: that's a classic symptom of Bieber Fever.

Girl: Don't f*ck with the Biebs!!!!!!
by vakid February 23, 2011
 
44.
In Modern Warfare 3 the use of the predator drone became known as Bieber fever. Killing millions just as J.Bieber him self.
Hey guys I've got 5 kills in a row I'm going to drop some Bieber fever on them.
by XX1YoloSwag1XX December 21, 2013
 
45.
A deadly virus that causes girls to go wild for Justin Bieber. There is no known cure for this except by a silver bullet to the head. It also causes beliebers to act like hypocrites. this disease is evil. the heart and soul literally becomes impure. Its a disease from Hell.
Bieber Fever is an evil, deadly disease caused by a devil and asshole named Justin Bieber. He ruined the lives of many girls. The girls are changed forever. This disease attacks the heart and soul of young girls and they become impure. A disease that is literally from Hell.
by ajsfsoifjheiruwhfjdsnvaurhfrjl September 28, 2013
 
46.
The bad sickness you get when listening to Justin Bieber. *Only some get it* It may spread around. THERE IS NO CURE TO BIEBER FEVER YET.
Example of Bieber Fever:

Justin Bieber: ♫Baby, baby baby ohhhh♪

You: OGMOGMOMGMGOMG LET'S FAN GIRL JUSTIN BIEBER OMG I LOVE HIM HE IS SO CUTE HIS HAIR IS ADORABLE OMG HIS SMILE... OH HE'S COMING TO OUR TOWN LET'S SEE HIS CONCERT WOWOWOWOWW MY ROOM IS PLAIN, I'M GONNA COVER MY WALLS WITH JB POSTERS!!!!!!!!!

Me: smh
by Mr. Walrus from Walrus Land June 20, 2013
 
47.
A disease that results from being sick and tired of hearing about Justin Bieber all the time. This disease is a highly dangerous disease which can cause death, however, patients of Bieber Fever have sometimes resorted to suicide.
Teacher: "Where's Georgia?"
Student: "Um, she died last night."
Teacher: "How?"
Student: "Bieber Fever."
Teacher: "Oh no, I have Bieber Fever too. I'm just so tired of hearing about him, it's so irritating."
Student: "Careful, it's potentially fatal."
by lolfest69 March 29, 2011
 
48.
When a fan is so obsessed with the godly Justin Bieber, she refers to herself as having Bieber Fever.

You have Bieber Fever if...
-You love Beebs
-You own the two CD's
-You own his book
-You have got to his concert
-You get ever magazine with Bieber's face on it
-You have 30+ posters of him
-You know every detail about him
-You know every lyric he sings

Side Effects
-Annoying
-Loss of friends
-You automatically become a 'belieber'

*See 'belieber' for more info on the topic
-Crying
-Youtube addiction
-Rapid Heart Beats. (RHB)
Dude, that Lexy girl has Bieber Fever.

I know man, he's cool.
by Massiecure. January 26, 2011
 
49.
A disease in which one is obsessed with the pop sensation Justin Bieber. Currently a cure is being developed, and will be widespread once the pop star hits puberty.
YO! IS THAT JUSTIN BIEBER?
YES! OMG! I think I'm infected with Bieber Fever!

*Justin Bieber Hits Puberty/Cure is released*
YO! IS THAT JUSTIN BIEBER?
WHO?
by Dumbledoor116333 March 01, 2011