The video “Guys: A Lesson On Breasts” is one of a series of videos developed for the Supporting Tailored Approaches to Reducing Tobacco [START] – Decreasing Breast Cancer Incidence project. The START program of research focused on developing health messages about the increased risk of early breast cancer associated with smoking and second-hand smoke. This video is aimed at raising awareness among teen boys of the increased breast cancer risk for girls from being exposed to cigarette smoke.