Well obviously if you've seen Band Geeks and remember the quote, you'll know and remember that Squidward mentions that Squilliam Fancyson was his arch-nemesis in Band Class. So back when Squidward and Squilliam were in High School, they likely both took Band Class, and Fancyson was rich as a teenager too, and was always stuck up and with the bratty rich kids, doing whatever they want and picking on victims, and Squidward was one of them.Squidward probably was likely jealous of Squilliam always being rich and gloating about all the awesome things he has in his possession, and they probably picked some fights in Band Class. Not only that but poor Squidward was probably also bullied in school back then, by Fancyson of course, but probably also by Jocks and other upper classmen.
Well that's my theory anyway, back in the SpongeBob characters' High School Days. So I have to agree with the others that this is a great idea for a fanfic to include the teen years of the SpongeBob characters.
I'd say both...if there was a topic for Patrick I wonder what he'd win?
