Like a weiner only smaller.

A very small penis.

Named in honour of popular singer Justin Bieber, a small weiner believed by many to have an extremely small penis.
Q: I heard Justin Bieber's weiner is just a bieber. Can that be true?

A: Yes indeed: modern science has shown it to be negligibly small.
by Pipe Downn November 12, 2010

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noun; used to describe Next level of douchbag
Brett is the biggest bieber, I mean really, who follows up something on the level of a vehicular manslaughter with the comment, "everything happens for a reason."

Hey, cut that shit out stop being a bieber.

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The most humiliating put-down for being a whiney bitch or pussy that should almost always provoke a reaction of compliance.
Hey man I just got out of work, let's go get some beers!
-"I can't dude, I have to wake up early tomorrow"
Stop being such a fucking Bieber and meet me at Sully's.
-"Fuck you dude... I'll be there in an hour."
by American Cousin July 08, 2012

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A boy of zero talents.
Alex: That boy can't do squat.
Alexis: Yeah, he must be Bieber.
by Sophis March 05, 2011

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The act of throwing up because something is so horrendous.
If you've ever seen Jersey Shore, then you've probably Bieber'd or have come very close to Bieber'n.
by Zuthner March 02, 2011

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adj; a word to describe something that is utterly stupid and wack -.-
guy: "hey watcha doin'?"

dude: "im reading Twilite"
guy: "DUDE!!!!! that is so BIEBER!!!"
by Ryu1er February 09, 2011

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Common name given to a grown man who texts, emails and talks in a manner much more suited to 12 year old girls. Often attempts to cover this persona by claiming fictional relations with maternal entities of known associates.
"What's the moron's name that always ends his emails with those dumb smiley faces?"

"Oh, you mean Bieber?"
"Yeah that's him, he just sent another reference about my mom, then signed it with a smiley face. That sure was funny when I was not quite yet a teenager."
by Vice Cap'n Berry August 19, 2013

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Acting like a girl
Opposite of Man
Oh, Your such a Bieber
by loveyoujbiebs1158 January 29, 2011

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The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

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The Urban Dictionary T-Shirt

Soft and offensive. Just like you.

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The Urban Dictionary T-Shirt

Smooth, soft, slim fit American Apparel shirt. Custom printed. 100% fine jersey cotton, except for heather grey (90% cotton).

Buy the t-shirt