Quote Originally Posted by HoreTore View Post
I already have. But, I can give more:

In a group where everybody plays video games, playing video games is normal.

In a group where everybody works out regularly, working out regularly is normal.

In a group where everybody drinks, drinking is normal.

Etc etc, I'm sure you get the picture by now. Everything can be considered normal, it is the context the activity is placed within that determines whether or not it's normal.
Surely those are examples of things being subjective... ie there is no sort of objective truth behind what is normal, it is instead relative to the experiences of certain groups/individuals.