"Penn's Sunday School" is a podcast hosted by magician and entertainer Penn Jillette, known for his work in the duo Penn & Teller. The show features discussions on a variety of topics, including magic, science, philosophy, and personal anecdotes, often infused with humor and insight. The podcast aims to explore the intersection of skepticism and belief, encouraging listeners to think critically about various subjects. Each episode typically includes guest interviews, listener questions, and commentary on current events, making it an engaging platform for fans of Penn Jillette and those interested in thoughtful dialogue.