Culture shock?

I find it odd that I don't particularly culture shock easily, or, at least, I don't think I do... I seem to have seamlessly slid back into the mundane, everyday humdrum of North American society... the frenetic pace, the blasé materialism, the lack of a collective... that being said, I did find that I was ranting at someone about what "stupid, upper-middle class shits" we all were the other day...