"Always thought she learned it because she had to. She had to find some way to get desert before dinner and not be caught," Aries reasoned, moving to step in front of Scorpius.
He thought for a minute, trying to see what outrageous lie would fit best. If he was lucky, the bloody plant might actually eat the book if he gave it enough time. It certainly seemed to trip him up often enough.
"You might find some plant food transfigured to look like your book," he said, lifting an eyebrow to see how that would be taken.