Not a word

Have you ever said the word "funnest"? Well, it's not actually a word so you shouldn't say it. But, I admit, I have said it myself so I can't be too hard on you all. I did get a bit miffed however, when I saw a sign in Florida that said "The funnist place to be!". Ok, if you're going to use a word that isn't a word, at least spell it right...Sheesh!