A fatal disease that conquers your mind with Justin Beiber stuff (Ex: his dumb@ss songs); diagnosis requires instant hospitalization to get that bullsh!t out of your brain via brain surgery.
Teenage Guy: Hey, what's up, girl?

Teenage Girl: You know you love me, you know you care...

Teenage Guy: Are you okay?!

Teenage Girl: BABY BABY BABY OOOOOOOOOOOOHHHHHH!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! LIKE BABY BABY BABY OOOOOOOOOOOOOOHHHHHHHHH!!!!!!!!!!!!!!!!!!!!!!!! *continues singing and starts dancing*

Teenage Guy: Holy shit! Someone call 911!!! SOMEONE HELP MY GIRLFRIEND!!!!!!!!!!!!! SHE HAS BEIBER FEVER!!!!!!!!!!!!!!!!!! SOMEONE!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
by UrbanPreTeen February 8, 2011
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an teenage boy, who has not hit puberty, who has a high voice and rides around in his moms mini-van.
Well i tell you that Steve is just a MINI-VAN BEIBER!
by Twin Boobies!!!! January 20, 2011
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a sexualy transmitted desease witch explodes a person's genetals.

The first case was reported recently on a person (justin beiber) who is the only one who, to date, to survived this most lethal desease (reportedly because of the remarquably small size of the explosion). Further more, this desease, before usually restricted to a small amount of cases per generation, has spred remarquably over the past few years and now thousands of little girls, boys and animals are affected.
BOUM!

First person: What was that?

Second person:The latest victim of the Justin Beiber Fever. She was at his concert last night.
by justin beiber fan1234567890987 December 3, 2010
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consisting of a generic sweepy floofy bob like structure with some subspecies having curls at the side, this haircut is a beacon of douchebaggery and breederosity upon any head. avoid all justin beiber hairs everywhere.
me: justin beiber hair at one oclock
sabrina: omg my douchedar is off the charts
by lloyydd May 16, 2010
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Justin Beiber Syndrome- A disease in which the holder is affected by all of the symptoms that Justin Beiber has (high pitched voice, being bad at singing, etc.). The only known way to get rid of Justin Beiber Syndrome is to find Zaphlex in its physical form. The only way to obtain Zaphlex is to climb to Yosemite mountain and meet bear to witness the mythical and rare double rainbow.
Oh no! Chuck caught Justin Beiber Syndrome!
by Zaphlex November 19, 2010
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Everyone's reaction when they first hear Justin Bieber sing. Due to Urban Dictionary saying that the example must contain the defined word in it, it has to be misspelled, as it was in the 26th (as of now) definition of Justin Beiber.
Person when first listening to Justin Bieber: Hey, is this a girl? No, its Justin Beiber!
by I spend too much time here April 21, 2013
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When someone does their hair, acts, and dresses exactly like Justin Beiber, probably because they're lonely and just wanna get the girls.
Richard's wife heft him cuz he was no longer the Beiber Bro she fell in love with.
by Curbngutter February 10, 2016
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