Who said the following?

"Ooh, look at me! I'm making people happy! I'm the magical man from Happyland, in a gumdrop house on Lollipop Lane!... Oh, by the way: I was being sarcastic."

And for extra credit: Where did I find this quote written down?
(Hint: It's not where you'd expect, so there's no way you'd know unless you happened to stumble upon it yourself.)