Top Definition
This is a term that Beliebers aka dedicated Justin Bieber fans - use. It means fantastic but in an even better way of saying fantastic.
Instead of saying, "OMG that's fantastic!", they will say "OMB --Oh my Bieber --Justin Bieber's body, eyes, and hair is just too BIEBTASTIC for you to handle."
by Bieblover101 January 22, 2012

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