I was born in Croatia but grew up in Amsterdam and have been living for 20+ years in the US. In Holland swearing involves a lot of diseases.. for example klerelijer (cholera sufferer) kankerlijer or krijg de kanker (cancer sufferer, get cancer) In Croatia it's more like fuck your mother (jebem ti mater) God fucks your mother (jebo ti Bog mater)

In Istria we have a nicer version of telling someone to fuck God (jebi Boga) Marry God (idi Boga ženit)... you would say that to family members when you don't want to be vulgar but the message is still more or less the same :-)