What does /B/ mean?

I have still yet to understand what /B/ ment. Can some one simply tell me what it means? I know there is a website... but still.

Just someone ramdomly says
"pigeons toads"
and people begin to find or dish out things they have of what the title is suggested to find.

Quote:

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Originally Posted by lothia

who the hell came up with that? That instead of saying random forum of 4chan you do /B/ ?

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Well, moot is the webmaster, and he decided what the directorys shall be, but using the directorys to name the various boards, don't konw who thought that up.
But once you know the network, it's actully alot easier that way.

I know what /B/ is.

I just don't get "DERU DERU DERU!"