We explore the fundamental psychological mechanisms that make content spread rapidly online, focusing on the role of basic emotions like awe, anger, and anxiety in viral transmission. The episode examines groundbreaking research from NYU and Penn State that mapped emotional responses to over 100,000 viral posts, revealing surprising patterns about what triggers sharing behavior. We conclude with a detailed analysis of how the 'Ice Bucket Challenge' masterfully combined multiple emotional triggers to become one of the most successful viral campaigns in history.