Back in ‘Nam…
Back in the day, when I was fighting in Vietnam, we used to hold in our urine. This is because the enemy was very good at detecting our scents. You don’t want to be the asshole that gets your company or platoon discovered because you couldn’t keep it in for a week or two. Sometimes we would have to hold in both #1s and #2s for fear of the enemy finding us. That would lead to the eventual #3, which would involve blood. We all knew what we were getting into though, we had all signed up for this.
Charlie wasn’t a particularly bad soldier, but he did have a particularly bad name given the situation.