I tend to dislike the ones that don't actually change the name at all, but only the spelling, and not in a way that changes the meaning... like "Paper Wate" pens, but using "weight" as the gag... or 6Up, a classic, but that doesn't make sense. But if I have to pick just one, I'd have to say, "Fearstone", for the simple reason that it just doesn't FIT into the rest of the Wackys. It's not a product that you can put in a shopping bag, and doesn't have a black border. It looks like it fell out of the Crazy Labels series and got included by accident. Not the worst gag by any means... and not the ugliest artwork (I agree with Sugarmess on that one), but just doesn't fit IMO.