Going commando is the practice of not wearing underwear under one's outer clothing. The term is theorised to be related to the much earlier term "going regimental", which refers to wearing the kilt military style, that is, without underwear.
Kilts have been traditionally worn without undergarments since their use as part of Scottish military uniform, leading to the invention of such expressions as "going commando" or"go regimental" or "military practice" for wearing no underwear. On the Western Front during the First World War, some Sergeants Major reportedly had mirrors tied to the end of golf clubs or walking sticks to inspect up and under the kilt at parade inspection. However, in 1940 the kilt was retired from combat due to the vulnerability of bare skin to chemical agents, although it was retained as the formal dress uniform of the regiments. In the 1950s, kilted soldiers on parade would be checked by the Sergeant Major using a mirror on the barracks floor. In 1997, a Black Watch soldier received wide press exposure, because of windy conditions during a military ceremony in Hong Kong.
by sharp_curves June 25, 2012
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To not wear a face mask when it is required.
Greg, put ur damn face panties on!! You know you can’t walk around the office going commando!
by BBQFreak August 6, 2021
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To not wear underwear with pants. Named so because your junk is going in alone, and without support, much like a commando.
John is going commando biking to prevent chaffing.
by azrel9 November 30, 2011
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If a person is 'going commando', they are not wearing any underwear.

It is called 'going commando' because of an old practice in the army, where, so you didn't shit your underwear in battle, you didn't wear any - and therefore could boast that you didn't shit your pants.

Also a known cure for vpl.
"I'm gonna wear those really tight shorts and go commando to show off my bulge."
by Umbongo - England April 1, 2003
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1. Wearing pants without boxers.
2. The coolest video game ever! Also called Ratchet & Clank 2. (The name is a joke)
1. I don't have any clean boxers left, so I guess I'll be going commando today.
2. I want to play Ratchet & Clank 2: Going Commando NOW because it's the best game ever!
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In Photography, It refers to not having a protective UV filter attached to the front glass element of a DSLR camera lens. A lens without one runs a higher risk of being scratched or broken due to it being dropped, flying debris or hit up against something.
I know you just got that 70-200mm lens, but you can't go into an Occupy Wall Street protest going commando without a filter on it. What if the police move in or protesters start throwing things?
by GenVirtu December 3, 2011
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