It's amazing what the right incredibly trivial hack can do:
this Greasemonkey script can be readily pressed into the service of crafting an undictionary -- a list of words which, when typed in Firefox, will automatically be replaced by something suitably embarrassing. Already feels like my brain is being forcibly remoulded by having to circumlocute around a few common words that hide deep prejudices; it's deliciously frustrating. (Anyone who can correctly guess any item on the list gets a virtual lollipop.)
Now if only it were that easy with speech . . .
(PS -- e-mail backlog will be dealt with Monday. Not ignoring anyone, word of honor, just tying some loose ends.)