If you can forgive Ginny Weasley for opening the Chamber of Secrets with Riddle’s diary and petrifying and almost killing four other students, then you can forgive Ron Weasley for getting stressed and distraught by Slytherin’s locket and consequently leaving.
Because, you know, those things were fucking Horcruxes.
THIS THIS THIS
Tag: hp
Okay but Muggleborn students whose first letter home reads “Dear Mum and Dad GRANNY WEATHERWAX IS THE HEADMISTRESS”
It becomes Tradition, as Discworld memes tend to do, with someone in the Common Room mentioning “Headmistress Weatherwax”, and then it becomes an in-joke with the people who were there even if they didn’t recognise the reference, and it spreads and grows, and the older Muggleborns tell the first-years who do know Discworld that Headmistress McGonagall actually knew Sir Terry, and was the inspiration for Granny, and you think it’s coincidence that Granny is so good at Borrowing and McGonagall can turn into a cat? and the Witches books get passed around, and we know how good Potterverse wizards are at critical thinking, and the upshot is that within a couple of weeks it is Established Fact that McGonagall is actually Granny Weatherwax.
And one day McGonagall stands at the podium at dinner time, and casts a baleful eye around the room, and says “I can’t be having with this.”
And the kids who started the rumour in the first place swiftly reevaluate all their life choices.
Beltainefaerie's Flights of Fancy 