Draco let out another little laugh, softer than his previous ones. "I know," he said, letting Teddy chew on his finger again. "Severus spent many long nights telling me that you dared to use his potions books in such a manner. Said something about you being an amateur unworthy of sitting in his classroom-" he spoke with a fondness in his voice as he spoke about the man who had been his Godfather and tutor, his protector. As Harry was for Teddy.
"Although if I remember correctly you weren't too shoddy with a bit of improvised spellwork," he added, turning to look at Harry again, his smile growing if anything. "Do you know how many wonderful excuses I came up with to tell people about the scars on my chest? Marvellous stories. But none involving being caught in a toilet by you."