A guy goes to a government office to interview for a job.  The interviewer asks him, "Are you a veteran?"

The guy says, "Why, yes.  In fact, I served two full tours in Vietnam. "Good," says the interviewer.  "That counts in your favor.  Do you have any service-related disabilities?"
The guy says, "Actually, I am 100% disabled.  During a battle a land mine blew my balls off, so they declared me disabled.  It doesn't affect my ability to work, though."

"Sorry to hear about the damage, but I have some good news for you.  I can hire you right now!  Our working hours are 8 to 4.  Come on in about 10, and we'll get you started."

The guy says, "If working hours are from 8 to 4, why do you want me to come at 10?"

"Well, you need to know that in the civil service, we don't do anything but sit around and scratch our nuts for the first two hours.  And there's no point in your coming in for that."