It's a colloquialism, easier to pronounce than BBC.Andy of Comix Inc said:I'm sorry, guys, everyone someone says "The Beeb," I think "Justin Bieber."
So when the guy above me says "I love the Beeb," I get more than a little confused. BEE. BEE. SEE. BBC. It's not hard to type, exactly.
It's certainly been around a hell of a lot longer than Justin Bieber has.