Harry Potter: Who Washed My Underwear?

After graduating from Hogwarts, Laila left her friends stunned by joining a housekeeping company and devoting herself to studying household magic alongside house-elves.

At last, the day had come for her to start work.

Standing in rain-swept Spinner's End, she rubbed her hands together excitedly, ready to get down to business. The client didn't seem to be home, so she used the spare key provided by the housekeeping company to let herself in.

The rooms were dim and old-fashioned, and the furniture was positively minimalist. Humming along to classical music, she cleaned the whole house until it was spotless, and even washed the pile of clothes in the bathroom.

Certain that this client would give her a five-star review, Laila happily locked up and left.

In the middle of the night, Severus Snape dragged himself home, exhausted. He tossed the essays he still had to grade onto the table and headed straight for the bathroom.

Two seconds later, the quick-and-neat housekeeping company received an angry complaint call:

"Who... who washed my underwear?"

[Sunny little housekeeping prodigy heals the gloomy Potions Prince]

[Definitely not a substitute]

Theme: Wash your hands often, and do your laundry regularly