dont you hate it when

[Albel The Wicked]

In the midwest, waving to people you don't know is a little more common. caterpie;

And besides, when a person far away who you can't really see waves to you, you can't really be sure if you know them or not.

Actually this has happened to me before.  Specially when im not wearing contacts, i just wait for the person to come close enough and apologize for not saying hi back.