Ohhh, eighteen.

[He rolls his eyes and then points at Ardyn with the hand holding his root beer float.]

I don't care if you're Emperor of Japan. I call it like I see it, kid, and my ten-year-old grandson's got a more mature grasp of reality than you. You think you can handle it alone, fine, but take it from someone who knows--you got a world of hurt coming to you if that's how you handle yourself.