V8 vs. Commando v8

Commando also means that you're not wearing underwear.... :eek:
While I do find this funny, I wonder how it became part of the language.
I was in the Army for a short time in 1984. I always wore underwear. I never looked at the other guys foot lockers but I do know that we were all issued the same amount of clothes.
Was I the only guy that wore underwear in the military?