As the Korean war was at a stalemate the US realized that they didn't know how many prisoners they had so they appointed a Marine Colonel to do a census of all the prison camps.
He walked into the office of a prison, and asked the soldier there how many prisoners there were.
"Many, many", he replied.
"No, I need to know exactly how many for my report".
"We have many, many", he replied again.
The Colonel then asked if there was someone who could give him the exact amount.
The soldier said that a Marine Sergeant sitting at the next desk might be able to tell him.
He went over to the Sergeant and said, "How many prisoners do you have here, son".
"Colonel, we've got a crap load of them."
The Colonel said, "Now why the hell couldn't that little SOB have told me that?"