What random scene lives rent free in your head?

About once every few weeks I’ll remember that in the incredibly well written The Compact by astolat - a fic full of intricate world building, thought provoking emotional and ethical dilemmas - Draco and gang basically>! explain away Camelot’s castle popping up overnight in a muggle area by advertising Disney type prices of admission to deter visitors.!< And it works? I don’t think I’ll ever get over it.

What super random fic scene is it for you?