I love seeing them dancing with the musical notes swirling around them complete with happy music. It's just one of the cutest things ever! Mac was just doing the happy dance after he changed his shirt.
I actually posted this on another thread, if you group all of your villagers together, they will talk with each other and will very often become happy. They may also become sad or angry though.
Ahhhh it's one of the most cutest things ever ~
But honestly tho, I hate it when they change their shirts, now Lobo is wearing the same shirt as Rosie (the pink one, Rosie's original clothes) and it doesn't suit him AT ALL!