The discussion centers on the hazardous yet fascinating compound nitrogen triiodide, noted for its instability and explosive properties when dry. Several users recalled personal experiences of making nitrogen triiodide during their school days, emphasizing the compound's easy synthesis (using iodine and ammonia) and the surprising explosive reactions it can produce even in small quantities. Many recognize the compound from their childhood experiments, recalling both the fun and the dangers associated with handling it. The post also highlights a notable article by John Walker, co-founder of Autodesk.