Oh, it's not a "culture shock" kind of thing. I actually had no issue whatsoever going to a Sauna or even going swimming on the FKK hours. Like I said, I studied in a German school so I kinda knew these things are just a natural part of German life.

And it's not like I was "bothered" by him bringing his own food or wanting to cook it. It just seemed the guy was completely missing the point by being too focused on the "meal".

I just want to give one example of what I meant by "cultural differences", not that this one story cemented my opinion of Germans. Somewhat like trying to explain to an Italian that the North American idea of "getting coffee" means grabbing a Starbucks and walk around - or worse, driving to get it on a drive-through.