"You're still eleven years old under it all, aren't you?" he asked with a chuckle, recognising the words. And, just like the eleven year old bookworm had, Alastor couldn't find a good reason to say no. So, he stood up, silently acquiescing as he'd been doing ever since.
They really weren't normal.
"But, if the Headmaster catches us out after hours," he teased half-heartedly, "you get to do the explaining."