In an earlier episode, we speculated about the origin of the phrase go commando, which means to go without underwear. We suggested that it was somehow associated with being “tough as a commando,” gritting one’s teeth through the attendant chafing. But a listener who served as an infantryman in Vietnam has a different take. After a comrade suggested he “go commando,” he discovered that opting out of his army-issued boxer shorts actually made him more comfortable in the tropical heat. We love these firsthand reports about language, so keep ’em coming. This is part of a complete episode.