To make someones testicles small like justin biebers. So small that their voice sounds like something from the chipmunks.
by Ellis3332342412 April 6, 2011
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Can be used as an insult/come-back. Originated as a sexual act when a woman (or man) is fellating a man and uses her (or his) bangs to sweep across and tickle the balls.

The term/act was introduced on a women's website called Makeup Alley and spread like wildfire when many of the women tried this act with their romantic partners and reported back to the message boards.
That woman really knew how to Bieber My Balls", "Shut up. Bieber My Balls
by BmahB January 20, 2011
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