Remus: What part of “I’m studying, do not bother me.” did not you understand? James: No, Moony. You said “disturb me, only in case of extreme emergency” Remus: And What’s the emergency now? Remus: …… I hate you. By Space Dementia
Technically not from Harry Potter itself. But what kind of Harry Potter board would this be without a picture of Newt Scamander, the adventurous Hufflepuff, and author of the Hogwarts textbook Fantastic Beasts and Where to Find Them.