A bizarre one-shot. Involves Hermione's "One true master", Harry and Ron "guarding" the "philosopher's stone" and being incredibly stupid. Might be funny if your sense of humour is similar to that of me and my sister. Otherwise, well, it won't be, and I don't pretend everyone will find it funny.
Taking mistakes made by other people and writing based on what they've actually said, not what they intended. For example: "What would i get if i added powdered root of Asphodel to an infusion of wormtail?" Series of oneshots.