I thought I'd made up a really good word today - illiterati. I meant to insult some people who I didn't believe were particularly well-read or literate. Kind of a take off on the word illuminati ("enlightened ones.")
Rather proud of myself after I wrote it, I googled the word and found the definition in the Urban Dictionary. Almost exactly the same as mine. With the addition of the fact that illiterati "take pride in the fact that they are ignorant and in their refusal to learn."
So much for my attempt at originality.