I believe there are either half a dozen at least, or else the one person's very good at disguising their posting style, which I think we can agree that few of them are. Compare David C/Rocky with Turbonium, and you'll see what I mean.
"Now everyone was giving her that kind of look UFOlogists get when they suddenly say, 'Hey, if you shade your eyes you can see it is just a flock of geese after all.'"
"You can't erase icing."
"I can't believe it doesn't work! I found it on the internet, man!"