The characters are about to talk about fairy tales.
Given they are all wizards, it's probably going to revolve about the inaccuracy of magic in the tales. Though one character will observe that sometimes the fairy tales actually are magically accurate. (Rather as there are fairy tales that actually involve no magic for us.)
That they are now in a castle overgrown with roses deep in the heart of a magical forest is going to be an element in that. It's going to be the magic that isn't wrought by human hands that is accurate.