Ears and nose clogged, flight trainng, assigned the daily assistant to Flight Duty Officer, who runs the daily flight schedule. Learned much about radio comms, I did -- stuff that wasn't in the book.
Frustrated sounding aviator in training: "Looks like I f(#*$^d that one up, sir."
Tower: "Last transmission, say call sign."
Pause
Another Voice: "Tower, he said he f*&$$d up, not that he's f&^$*ing stupid."
Yet another voice: "This is Charlie Oscar, knock it off."
I got to hear the CO and "Another Voice" in the not so quiet conversation about a half hour later, regarding comms discipline, as the Flight Duty spot was adjacent to the CO's office.
The CO had recognized his voice.