Well, my personal favorite has always been:
Helevetin perkeleen sianvitun siittämät neekerin pillun polokijat.
It's quite impossible to translate to get the same level of.. feeling, but:
Hell's devil's niggers pussy's fuckers born out of the fuck of a pig, would be something to go by.
Fun Fact #1
Perkele is the old Finnish evil spirit, not to be confused with Saatana which comes from Christianity. Perkele and Saatana are not the same, as our old folklore proves.