This collection investigates the social phenomenon of passive-aggressive communication through the lens of anonymous, written notes left in public and private spaces. Author Kerry Miller curates a selection of real-world correspondence submitted to the website passiveaggressivenotes.com, analyzing how individuals navigate conflict, frustration, and boundary-setting in modern life. The book serves as a sociological catalog of human irritation, documenting the specific linguistic patterns used to express grievances without direct confrontation.

The book provides a lighthearted yet observant look at the mechanics of indirect social friction in contemporary society. Its structure offers an accessible, anecdotal examination of how people attempt to enforce social norms through written communication.