[That curse is music for Jack ears. Yes, please, acknowledge how much chaos he's causing, how important he is - give him attention. It's what he lives for.

When he notices what Hiccup is going to do, he actually stops climbing, and waits for him with a grin plastered on his face. Now this is fun, Jack can get used to having this guy after him. Counting under his breath, he bends his legs, braces himself... and jumps when the cop passes, landing on his back and keeping himself held by throwing his arms around Hiccup's shoulders.]

Thank you for the ride, very thoughtful of you. Think you can drop me on that chandelier over there? Just remember the rules of the game... [He whispers against the cop's ear.] If I fall, then you fall with me.