Over the four decades that I have been alive, I have often heard the term "normal" or "abnormal" being used. These terms were always used by people who thought they were "normal" yet the others around them were some how not in the category of being normal. It's a thought that has bothered me a lot over the years.
What does being "normal" mean? According to dictionary.com it is conforming to the standard or the common type; usual; not abnormal; regular; natural.