justin beaver is a mythical creature that uses its tail while singing highly to disorient and kill its prey. which is unaffective on any creature around age 11-14, or prostitues.
uh oh, i thought i spotted a justin beaver hiding in my closet.
by holy_shit_its_a_cow January 14, 2011
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Justin Beaver (born October 19, 1984) is an American football running back He played college football at UWWhitewater.
Mann, That Justin Beaver is soo good.
by lovextooxsmile February 26, 2010
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A horrible teenage girl, who has somehow turned a large amount of the population of pre-teen to teenage girls into lesbians
Girl 1: OhEmGee I LOVE JUSTIN BIEBER!!!!
Girl 2: Umm, don't you mean Justine Beaver?
by smartgirlie February 12, 2011
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Justin Beaver is a bitch celeberty from Canada that all the 12 year girls love he is useless regarded as a "gay"/"fag"
Don't you just hate that greedy bastard Justin Beaver
by DerpMcNuggetsOrSwagDankAndMlg February 01, 2016
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The teenager that sings the popular (by other teenage girls) songs such as the contradicting, lying, and shitty "Baby", "One Less Lonely Girl", and "One Time".

There have been reports of a penis in the pants, but a vagina in the voice box.
a: You know that Justine Beaver hasn't hit puberty yet?

b: You know that I mix him up with Miley Cyrus?

a: Doesn't everybody???

OR

a: OhEmGee! Who's the chick singing "baby, ooh baby" on the radio right now?

b: Oh ya know! Just Justine Beaver. She has nice pearly whites, pretty hair and a pair or bee ehhh yoo ti fool singing pipes!
by Cassafrass72 April 20, 2010
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A term for Justin Bieber who sounds like a pussy so thats where the beaver comes from. If it wasn't for him I would listen to the radio. So i am stuck with youtube. Beyonce has deeper voice than him, his cherry probably hasn't been pooped either. This word can describe ANY kids like.
Girl: OMG I love justin Bieber!!!

Guy: Are you a lesbian because he is really Justin Beaver. So he has a vagina.

Girl: But i love his voice!

Guy: He sounds like a 2 year old girl on helium.
by GO DIE IN A HOLE JB February 22, 2010
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