Once-ler sighs shortly through his nose, then turns his head back to Hiccup with an annoyed roll of his shoulders leading the motion.

"You oughta put a leash or a muzzle on that thing. Honestly, he's more annoying than--"

Then he abruptly pulls himself up short, and for a split second his eyes flick up, as if looking at something- or someone -far away. Once-ler shakes it off, literally, after a moment and settles for glaring at Gomamon again. "Nevermind. But my point is made."