Dragon's dictionary continues to fascinate me

Over the last couple of weeks I've been busy writing on the bus using a notebook of the dead tree variety, and then transcribing it when I get home using Dragon NaturallySpeaking. While I generally keep away from writing anything too steamy when I might have an audience, I have just discovered that Dragon recognises the word "fuckable". Since I haven't actually trained the new installation on most of my document files, I suspect it didn't learn that from me, which leads me to wonder why it's in Dragon's vocabulary…