"Well, sir," the sergeant says, "as you know, we have 250 men on this base, and no women. And, sir, sometimes the men have. . .urges. That's why we have the camel, sir."

The captain says, "I can't say as I condone this, but I do understand about urges, so the camel can stay."

About a month later, the captain starts having a real problem with his own urges, and he asks the sergeant to bring the camel to his tent. Putting a stool behind the camel, the captain stands up on it, pulls down his pants, and has sex with the camel. When he's done, he asks the sergeant, "Is that how the men do it?"