A company of soldiers, of which our protagonist, Don, is a member, has set up a temporary camp from which they will launch some raids on some enemy positions. Of Don, we read that
The company headquarters runner sought him out and awakened him---by standing well clear and giving the hammock rope a sharp tap. Don came instantly awake, a knife in his hand. "Easy!", cautioned the runner. "The Old Man wants to see you."
Don made a rhetorical and most ungracious suggestion as to what the captain could do about it and slid silently to his feet.
The author intended this to be read by young people whom he did not want to encourage to use coarse language, but he must have intended it to be understood that such language was used on this occasion.
Is there a name for that?