In A Vulgar Art, Ian Brodie uses a folkloristic approach to stand-up comedy, engaging the discipline's central method of studying interpersonal, artistic communication and performance. Because stand-up comedy is a rather broad category, people who study it often begin by relating it to something they recognize - "literature" or "theatre"; "editorial" or "morality" - and analyze it accordingly. A Vulgar Art begins with a more fundamental observation: Someone is standing in front of a group of people, talking to them directly, and trying to make them laugh. So this book takes the moment of performance as its focus: stand-up comedy is a collaborative act between the comedian and the audience.

Although the form of talk on the stage resembles talk among friends and intimates in social settings, stand-up comedy remains a profession. As such, it requires performance outside of the comedian's own community to gain larger and larger audiences. How do comedians recreate that atmosphere of intimacy in a room full of strangers? This book regards everything from microphones to clothing and LPs to Twitter as strategies for bridging the spatial, temporal, and socio-cultural distances between the performer and the audience.