You know what Pygmy Puffs are and are constantly explaining to people what they are.
You have memorized Harry Potter's prophecy.
You knew Cedric would die.
You know what a Fiendfyre is.
You have memorized The Tale of the Three Brothers.
You know that a Basilisk is hatched from a chicken egg that was incubated by a toad.
You know that Horace Slughorn came to Aragog's funeral to collect Aragog's venom because it is rare.
You know exactly what Harry said to the snake in the zoo.
You know Hagrid got Fluffy from a "Greek chappie."
