Sorry Kuja. Yes, Noctis is a dead king as you know from the body swap but the kicker is (that you may or may not have noticed during it) that he is still twelve. Ok physically thirty, mentally twenty and sometimes twelve. He got put to sleep by Bahamut for ten years and although he came out and did his duty and died and all of that, sometimes the boy comes out in the man before you. This is such a time.

The king was holding his sides and had leaned against a tree to get all of the laughter out. But he's fighting to breathe.

"I figured..you were vain about all that hair." There's still plenty of laughter in his tone.