one

Normal.

What was considered to be normal varied greatly, from country to country, from house to house; it was pretty distinct.

From tiny things such as what time you ate dinner every night to what clothes you wear to whether or not it is your right as a citizen to bear firearms in public. But, there were things that were easily distinguishable as being not normal. Abnormal. Strange. Different.

There was one example that was cemented;

he was not normal.