[WFOTM] Word Facts of the Moment

So, I stole this book from work: "Word facts and phrases," which I have found to be inordinately hilarious. So I thought I would occasionally bug the hell out of my listers by divulging the secret history of some of the English language's craziest phenomenon.
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Gibberish:
The etymology of this word is uncertain.*

Johnson says, "As it was anciently written gebrish, it is probably derived from the chymical [Chemical] cant, and originally implied the jargon of Geber [http://en.wikipedia.org/wiki/Geber] and his tribe." Geber was an alchemist, and, as Nares says, "Considering the great prevalence of that affected science, and the early ridicule thrown upon it, [Johnson's theory] is not improbable."

*I don't think they needed to elucidate further, really.

ed. Note: I think this might also be one of those words, like "Gyp," which don't appear to modern users to be highly culturally insensitive until you realize it's foundation.