Social media platforms are under mounting legal pressure as courts scrutinize how algorithms amplify dangerous viral trends. In Nazario v. ByteDance Ltd., a New York judge allowed a wrongful death lawsuit against Meta and TikTok to move forward after a teen died attempting a “subway surfing” stunt allegedly promoted by their platforms. In this article, Tom Hagy examines how the decision challenges long-standing Section 230 protections and signals a shift toward treating social media as potentially defective products when design and targeting harm young users. This case—and others involving viral challenges and youth safety—may redefine platform liability for years to come.