Top Definition
Made up on twitter, it is a type of orgasm people get when they see teen popstar sensation Justin Bieber. Justin may even get these himself time to time.
Justin Bieber Fan #1: OMG! Justin looks sooo hot here!! :0

Justin Bieber Fan #2: It looks like he's having a biebergasm! mmmm.
viết bởi Belieber 20 Tháng mười hai, 2009

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when every girl at a justin bieber concert simultainiusly have an orgasm when he starts singing
Dude: did you see the biebergasm last night?
Guy: ya i got a major stiffer
Dude: i think justin had one himself
viết bởi bootyfreak 21 Tháng một, 2010

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A sexual erousment you get when you see or hear teen pop sensation " Justin Bieber "
Bieber Fan No.1 : oh my god he's so hot!
Bieber Fan No.2 : oh i know, i hink i just had a biebergasm!
viết bởi JBFanClubX 10 Tháng một, 2010

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When Justin Bieber does something that makes you horny
biebergasm!
viết bởi BelieberJam 12 Tháng mười một, 2010

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The Urban Dictionary T-Shirt

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When someone has an orgasm, after seeing or hearing Justin Bieber and redefines it as "Biebergasm"
OMG. Justin Bieber is soooo hot! BIEBERGASM!
viết bởi iluvbieber 02 Tháng bảy, 2010

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The Urban Dictionary Mug

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The Urban Dictionary Mug

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The Urban Dictionary T-Shirt

Soft and offensive. Just like you.

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The Urban Dictionary T-Shirt

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when you see justin bieber, he is SO hot and you are so overwhelmed you have some kind of an orgasm, except its completely justin bieber-ish. :)
girl: ..and this pic is of paris hilton
other girl: cool
girl: and this is of..OMG, justin bieber!
other girl: omg omg omg hes so hot, *sighh*
girl: i TOTALLY just had a biebergasm
other girl: same. here.
viết bởi RoRogirrrllllyyyyyyyy yes. 28 Tháng mười, 2010

The Urban Dictionary Mug

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The Urban Dictionary Mug

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The Urban Dictionary Mug

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The Urban Dictionary T-Shirt

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The Urban Dictionary T-Shirt

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when a belieber (justin bieber fan) Gets REALLY REALLY excited
viết bởi bieberfever247 03 Tháng mười hai, 2011

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The Urban Dictionary Mug

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The Urban Dictionary Mug

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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).

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