GRANITE stands for "Great Rock Admirers National Institute of Tectonics Experts".
Ms. Frizzle: And even if he stopped eating Sea Weedies now, it would take about 30 days for the cells that aren't orange to reach the surface of his skin.
Ralphie: Thirty DAYS?! He doesn't even have 30 seconds!!
Wanda: Isn't there just some we could suck up all the orange stuff??
Ms. Frizzle: Well asked, Wanda! What do you think, bus?
(The bus covers itself with villi.)
Arnold: What's TAKING so long?!
Ms. Frizzle: Patience, Arnold. As a former Miss America once said: "Beauty may be skin deep, but orange isn't."
Ms. Frizzle: Class, time to get under Arnold and Phoebe's skin.
Phoebe: (points to Arnold's stomach) I wonder where they are now?
Arnold: I don't want to think about it! I just want to stop being orange!
Phoebe: Arnold, no!
Arnold: You say something, Phoebe?
Phoebe: (panicked) Whatever you do, don't...! (Arnold swallows the Seaweedie with the bus on it) ...swallow. The bus was on that Seaweedie, you just ate our class!
Arnold: Oh, no. Not again!
(Phoebe is covering Arnold's face with flour to hide the fact he's orange)
Phoebe: There. You don't look nearly so orange now.
Arnold: Phoebe! I can't go out there covered in flour! I look like a pumpkin pie!
When Arnold states "not again" when accidentally swallowing the bus, he's referring to the season one episode "For Lunch" in which the class took a field trip in his digestive system.
In the SUNTV version- parts of the song was muted but second or third time it was in it's original version.