This is a collection of related one-shots about confusion over Muggle objects. An excerpt from the first chapter, A Contraceptive Controversy:
James Potter was quite brilliant, or at least he’d like to think so. He had some of the best grades in the sixth year- they would probably be the best if he did his homework regularly. The Marauder’s Map had been his idea- even if he wasn’t brilliant, the Map certainly was. He was also an animagus. An (illegal) animagus at sixteen was something brilliant indeed.
So if he was so brilliant, then why was he incapable of identifying the object before him?
It’s not like it was particularly complex: all it was was a little piece of rubber, really. There’s nothing complicated about that, is there? No, not at all.