Positive psychology is the science of improving one’s mental well-being. A positive intervention is an activity or behavior that leads to an improvement in mental well-being. Humor, the subject of this paper, has been shown to improve one’s mental and physical health, through a variety of mechanisms. Depression, stress, heart disease and blood pressure can all be reduced by laughing. While much of what friends laugh at together isn’t actual humor but more an acknowledgement of a shared experience, humor and laughter, regardless of the source, are healthy. Children, adults and senior citizens can all benefit from humor. And a sense of humor, the ability to create comedy (as opposed to the other aspect of a sense of humor, which is appreciating humor), can be developed and improved. Creating humor, and sharing it with friends, is also beneficial to one’s mental health. While many people are resistant to psychology or therapy, a comedy show that introduces elements of positive psychology to the audience, while also making them laugh, can help them respect and appreciate psychology, and may lead them to begin using techniques of positive psychology to improve their mental well-being.