The second we see somebody on the street or meet someone, we make snap judgments about them, about who they are and why we wouldn't necessarily sit with them or why we would or what's cool or not cool.
Well, I am a lot like my dad, and the character of Ted is based on my dad.
We all have our pet things that we like to get religious about.
People are going to behave however the social norms permit, and beyond that.