What is Go Commando?
1.
to dress without underpants / knickers, but be otherwise normally attired
"i'm afraid I can't lower my trousers your honour, as I have gone commando today"
See
2.
not wearing undergarments
3.
a guy deliberately not wearing underwear
"Nobody seemed to pay much attention when I dropped my pants until I decided to go command."
See
4.
to go without wearing any underwear under ones out clothes (distinguished by is being applicable to both genders as opposed to
I do not think I could go commando on a regular basis. I could not get used to it.
See
5.
going without the undergarment that protects your pointed object-- breasts for females, penis for males.
I have gone commando today. I am not wearing a bra.