(n.) a 16-year-old boy who thinks that he's cool and can sing hip-hop and is, for some strange reasons, loved by 13-year-old girls who thinks that he is a "talented musician" (citation needed, really, an italic would also be great) while even boys like girls sounds better than he is.

(v.) an act of having mistakenly considered a boy's high-pitched voice as a young girl's voice.
1. tom got justin bieber'd on the phone by may:

*phone rings*
tom: hello, good afternoon.
may: *enthusiastically* oh heyy, aunt marie. can i talk to tom?
tom: uhh..., may, it's me, tom.

2. i have nothing against the bieber personally, but i think the modern music industry needs more true talents.
by pinkflame :) May 19, 2010
Get the justin bieber mug.
another name for someone acting as a fag
(bobby kept killing his friends on xbox live)

Dude bobby stop being such a justin bieber!
by hatter1232 May 31, 2010
Get the justin bieber mug.
a 10 year old fag that is still a fucking drip off his dads
dick. Also sticks silly string cans in his ass.
by getthefuckouttahere June 17, 2010
Get the justin bieber mug.
justin bieber is a 16 year old boy that has (proven fact) hit pubery he is a kind smart kid who has common sence and knows wat he is talking about yes all his songs are about girls soo wat at least he isnt a total perv who wants to smush everygirl they see . he has a very good voice and deserves everything he has gotten he isnt the best singer in the entire world i get that but he isnt a fag-bag and he isnt mean besides boys dont like him cause he is a goodlooking kid and alot of girls adore him ..duh if u acully knew lots about him u wudnt call him a fagg or a bad singer or wat eve :
boy: justin bieber is soo gayy

girl near him: no he isnt he is a cool cute kid

boy: not even close and that stupid ass hair wats with it ?

girl near him: wow ur smart ..U HAVE the sam exact hair cut

boy:no i dont

girl : hey soso doesnt he have the same hair as j.b

soso: yea totes ... ALMOST EVERY guy does :p
by me_so_smartical<3 January 12, 2011
Get the justin bieber mug.
God's punishment for Earth's sins.

A very potent insult.
Guy1: I'm a bitch!? Well you... you're.... you're a Justin Bieber!

Guy2: FUCK YOU! You motherfucking Paris Hilton!
by Riadon July 10, 2010
Get the Justin bieber mug.