go commando (third-person singular simple present goes commando, present participle going commando, simple past went commando, past participle gone commando)
- (idiomatic, intransitive) To forgo wearing underpants.
- 1996, Friends (TV series), "The One Where No One's Ready" [3.02], Act 2, approx. 12 minutes (of 23):
- Ross: … why do you have to wear underwear tonight?
- Joey: It's a rented tux, 'kay? I'm not gonna go commando in another man's fatigues.