The twins wanted clarification on the new rules. Casting one Stinging Hex on a seventh-year would not rate expulsion, because the victim could be fixed up with the Episkey spell without the victim needing to visit Madam Pomfrey; but hitting someone with fifty Stinging Hexes would bring down the Wrath of Minnie on the offender. Turning someone’s skin purple and their hair white would almost certainly require that the victim visit Madam Pomfrey; but since the victim was not in pain, no punishment would be given to the pranksters.