"Good job, sister! You're the… great job, sister!"
Am I a hater for being a little weirded out by this? Probably. I mean, it's very sweet – he's using his toy ATV to help her take her first steps. But why does he call her "sister?" He talks like a 19th-century ghost child from a horror movie.
I would think that these kids were Amish, if it weren't for the toy truck and the fact that someone took a video of them.