I was a USAF officer in the late 60's and early 70's.
There was a cartoon that many had posted were they worked. It depicted a guy sitting on the can with his panta around his ankles. The can was an old-fashioned one with the tank mounted on the wall above it so as to give a good healthy flush. It was flushed by a handle hanging down on a rope. The roll of toilet tissue was seen on its roll on the wall next to the occupant of the can. The guy on the can was looking at you, and might even be wearing a ball-cap type fatigue cap of the era. The narrative of the cartoon was, "No job is finished until the paperwork has been done."
Google wil give me cutysys on this, but the one I always remember with glee as I think back and think of First Sargeants, Chief Clerks, and the guys who humped the flight line. Can anyone send me a PM of this? It must have been about in other services, and it might still be seen about today. The fatigues might look different today, but the message and thoughts would still be the same. No one could take offense. Just a part of the GI"s life.
The best to all the vets who still manage to smile at our service and fellow GIs.