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1- A humorous term used to describe rough sex with a belieber (Justin bieber fan).

2- To describe rough sex with a childish female.
tom: "hey man I was scoping out some chicks after the bieber concert"
shaun: "any nice ones?"
tom: "yeah there was one with a really nice set of melons, I got her back to mine for a little thrustin beaver"
shaun: "nice, hope she was legal"
by judgelead March 03, 2014
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