You know that you can wave to your fellow villagers by tapping on them when they're not close to you, right? And you're wondering what the point of this is? Well, it can be used as a friendship meter sort-of thing.

If you're on...

Good Terms:
Peppy, Snooty, Jock*, Grumpy:
Will wave back and a chime sound will be heard

Normal, Lazy:
Will bow and a chime sound will be heard

If you're on...

Bad Terms:
Peppy, Snooty, Jock*, Grumpy:
Will bow down, look up, and the sound of a piano crashing down will be heard

Normal, Lazy:
Will look to the side and a wind will blow

Useful for checking your progress for either getting someone's Picture or making a certain villager's time in your town the worst days of their life.