This person is frustrated with their roommate , who has a habit of taking things that don't belong to her. As with many parts of life, living with another person is all about communication. It's way easier said than done, and this person, who shared their petty revenge story , is tired of her roommate's inability to replace things she's used up. As u/nothesame shared, their roommate doesn't even mind when their roommates borrow their things, whether it's some milk or clothes washing powder. But…

Looks potent.