Since I'm Dutch and living in the Phillipines, here's some I throw in here and there without offending people around me:
Godverdomme and kut in general.
Towards men:
Klootzak
kutmongool
Klapaap
rot joch
rand debiel
Towards women:
Loeder
trut
kanker hoer (this one is pretty bad)
Here's some inspiration for those who will be attending the Amsterdam show:
http://www.insultmonger.com/swearing/dutch.htm
When I want to insult the locals in Manila:
Fucking savages or bloody monkeys seems to grab their attention.
Not being racist, but sometimes they're just that fucking stupid.