So what's up with this "Chansey Dance" guy? Why does "dancing" (spinning around to weird music) instantly heal my Pokemon when I'm at his house, but when I do the Chansey Dance somewhere else, nothing happens. I don't want to sound nitpicky, but this kind of irritates me. Why not just put another one of those creepy, overly overly-generous, "Come and sleep here, even though I don't have an extra bed or heck even one bed" old ladies?
Is it the Chansey? Because I would totally catch one and lug the fatty around if it mean a portable Poke Center.
Does anyone else feel the same way?

Hahaha I feel ya. It is out of the ordinary

That guy seriously creeped me out.

dont mock the power of the Chansey or your home will be egged

^This.

Seriously, when a guy offers to heal your Pokemon after going through a ton of tough trainers in Sevault Canyon, the rule of thumb is: do not downplay his generosity.
You're just fortunate that you took his Lucky Punch before he exacted his revenge.