Growing up in East Baltimore surrounded by poverty and violence is hard enough, and Coffin Nachtmahr had the added challenge of being different. He stutters. He never quite fit in, and he was picked on. Then he discovered a lifeline in the unlikeliest of pursuits: yo-yoing. In the subculture of “throwers,” he found purpose, acceptance and community. Today, Coffin is the city’s best, transforming the simple activity of yo-yoing into a transfixing dance of creativity, innovation and connection.