I was watching the episode where Annyong is introduced a couple days ago and noticed that when Buster brings him to school in order to register him, the posters in the hall all say "Help Surely Fünke". I can't remember, but isn't this before Maeby's alias debuted?
Yes, you see the a poster that says “Hold on, Surely Fünke. Surely Fünke: How we (heart) thee” in the episode Shock and Aww, but you find out about Maeby pretending to be Surely three episodes later in Altar Egos.