The viking blinks and looks down at his foot, lifting his leg a bit so Once-ler can see the prosthetic a bit better. "Oh uh...don't worry, this didn't happen here. ..Happened back home. ...I uh...lost it to a dragon."

..yeah, it's a very, very long story.

"You'd think I'd get used to it after a while but," Hiccup chuckles weakly, letting his foot touch back down with a metallic click, "yeah...that's easier said than done."