Initially ruled a suicide, 13-year-old Chelsea Dunn may have accidentally killed herself by what some kids call a game.

“They call it something dreaming,” says twenty-year-old Kelly Pilger. Sarah Johnson remembers, “They call it fainting each other.”

Self-asphyxiation-choking each other or themselves, which produces a kind of high. “Press people up against a wall, until they didn’t have any oxygen, until they passed out,” describes Kelly. Jessica Fuller says “[they] probably do it for about four hours at a time, like repeatedly, over and over again.”