Going commando means wearing pants with no underwear underneath, and that is the meaning almost everyone agrees on. When people talk about guys going commando, that is the picture they have in mind: pants on, nothing under them. The part that changes is what counts as nothing, and where the phrase even came from, so this post covers the meaning, the origin, and the version I grew up with.
What Going Commando Really Means
At its center, going commando is simple. You are wearing pants, shorts, or something similar, and you are not wearing underwear beneath them. This is the definition you will find in most places, and it is a fair one.
It is also the basic idea I grew up with. Pants plus no underwear is the main point, and everything else in this post sits on top of it. If you came here for the short answer, that is the short answer.
Where “Going Commando” Came From
The word commando itself comes from the Portuguese comando, which moved through Dutch kommando into Afrikaans. In Southern Africa a commando was a locally raised mounted militia unit, and the British borrowed the name in 1940 for their raiding units, drawing on the reputation of the Boer commandos. So the word was already attached to soldiers who were tough, mobile, and resourceful long before anyone applied it to underwear.
The phrase “go commando” for wearing no underwear is much newer, and nobody has a clean origin story for it. The earliest printed use usually cited is from 1974, in a collection of University of North Carolina student slang that defined it as being without underwear. By the mid 1980s it was showing up in newspaper pieces about college campuses, which points to students as the people who spread it.
The Oxford English Dictionary calls the origin obscure, and says the phrase most likely alludes to the commandos’ reputation for action, toughness, or resourcefulness, not to any specific practice. Other explanations exist, such as soldiers in the field skipping underwear to stay dry, or the phrase coming out of the Vietnam War. Those are plausible stories, but they are theories and not documented origins.
The Pop Culture Layer
Think about how people say they are going to do a MacGyver. Nobody means they are literally becoming the character from the show. They mean they are going to improvise with whatever is around, and the name carries that whole reputation in two words.
Going commando works the same way. The commando is the soldier known for traveling light and stripping everything down to what matters, and the phrase borrows that image for a person who has stripped away the underwear. Pop culture then spreads it, because a phrase that carries a vivid character travels faster than a plain description.
That is also why the phrase got a second wave of popularity in 1996, when it was used on the TV show Friends. A lot of people assumed the writers invented it, but it was already decades old by then. The show made it famous, and it did not make it new.
Why the Meaning Changes Depending on Who Uses It
Going commando is slang, and slang is cultural. A colloquialism does not have one fixed meaning that every speaker shares, because each group learns the word from the people around them. The meaning you carry depends on who taught it to you and where you were when they did.
That is why two people can use the same phrase and mean slightly different things without either of them being wrong. A written definition captures the version that someone sat down and wrote. It does not capture every version that people use out loud, in their families, neighborhoods, and countries.
What I Grew Up With
Where I grew up, going commando meant no briefs. That could mean wearing nothing at all under your pants, or it could mean wearing just boxers. Boxers did not count as the real underwear, so a guy in boxers only was still considered to be going commando.
Boxers, where I grew up, are worn over briefs, or they are worn around the house. They sit in a different category from the underwear you wear out. That is the extra layer on top of the core meaning, and it is the part that does not match the common definition.
This is my own understanding and it is how I learned the term. I am not claiming it is the only one, and I am not saying the usual definition is wrong. I am saying there is another version, and I grew up with it.
Why Briefs Counted and Boxers Did Not
Briefs are comfortable because they hold everything steady. Nothing jiggles around when you walk, run, or move, and that support is the whole reason to wear them. Once you are used to that, going without feels like something is missing.
It is the same reason athletes wear a supporter. Support during movement is not a fashion choice, it is why the garment exists. Boxers give you none of that, which is a big part of why they never counted as proper underwear to me.
Boxers also run hotter under pants. In a warm climate that matters, because a loose layer of extra fabric trapped inside your pants is not what anyone wants to deal with all day. They are comfortable when you are sitting at home, and that is where they belong.
Boxers Are Pambahay
In the Philippines, boxers are pambahay, which means clothes for wearing around the house. They sit in the same category as pajamas, loose shorts, and an old shirt. You do not wear them out, and you wear them when you are home and finished with the outside world.
That ties into something cultural. In a lot of Filipino homes, changing out of your outside clothes and removing your shoes or slippers at the door is just what you do. Outside clothes are for outside and house clothes are for the house, and boxers fall clearly on the house side.
Once you see briefs as the underwear you wear out, the meaning follows naturally. If briefs are the real underwear, then going without briefs is going commando, whether you have nothing on or boxers over nothing at all. The word is describing the absence of the briefs, not the absence of every piece of fabric.
Both Understandings Can Be True
Everyone has their own idea of what going commando means, and most of those ideas come from where they grew up. Mine came from a place where boxers are pambahay and briefs are the underwear you wear out. Yours might come from a place where boxers are the default and no underwear at all is the only way to go commando.
Neither of us has to be wrong. The core stays the same everywhere, which is pants and no underwear, and the edges depend on who taught you the word. A phrase this old, with this many stories behind it, was always going to mean slightly different things in different places.
If you grew up with the other meaning, nothing here is aimed at you. You learned the word where you learned it, the same way I did. I would rather say where I learned it than pretend the internet has the final say.
This is also how I ran into the question in the first place. When I asked an AI to research the phrase, it gave me the written definition and told me boxers did not count, and it took several messages to get it to treat my usage as a real input. I wrote up that whole experience in the EngineeredAI post on AI limitations, if you want to see what happens when a research tool only knows what has been written down.
