Ну вот лже-Грюм практиковал же Непростительные прямо на уроке - и ничего.

***Во время написания мне вспомнились обвинения против Аберфорта, практиковавшего какие-то запрещённые заклятия на козлах***
Скорее всего, он просто был зоофилом и любил своих коз вовсе не платонически.

Иначе как объяснить реакцию Ро во время этого публичного интервью: и как Ро схватилась за голову при общем хохоте, и вопрос о возрасте задавшей вопрос девчонки, и особый ответ, специально отредактированный для восьмилетней.

J. K. Rowling was asked in 2007 what exactly Aberforth did to the goat to be prosecuted. Below is a transcript of the interview:
Q: In the Goblet of Fire Dumbledore said his brother was prosecuted for practicing inappropriate charms [JKR buries her head, to laughter] on a goat; what were the inappropriate charms he was practicing on that goat?
JKR: How old are you?
Eight.
JKR: I think that he was trying to make a goat that was easy to keep clean [laughter], curly horns. That's a joke that works on a couple of levels. I really like Aberforth and his goats. But you know Aberforth having this strange fondness for goats if you've read book seven, came in really useful to Harry, later on, because a goat, a stag, you know. If you're a stupid Death Eater, what's the difference. So, that is my answer to YOU.