you think it's completely normal to have a festival once a year, celebrating a Norwegian band and seeing thousand of people wearing "Turbojugend" denim-jackets – and you actually know what it means
you don't think it's weird that public transportation/taxi/police drive Mercedes, instead everything else is weird.
you expect people to drink a bottle of Jäger each and think it normal
the radio says, "Queen Mary is arriving on Sunday" and you actually know who (or more so what) is coming
Making fun of Holland is a national institution, and vise versa.