>It is Polish... the actual pronunciation would be more like pets-IN-a. My dad who used to be auburn haired, had a nickname in his youth: Red Piss-in-a-bed.
>I keep telling myself that one of the advantages of having a name that is at first glance difficult to pronounce is that I almost always know when a sales person or charity is calling on the phone.

Accidentally, "pećina" means cave in Serbian - not sure that it's in any way related to the Polish word. "Peć" is a furnace, which sounds like an ancient word, so there may be some cousin words related, but then maybe not.

Try with a name which nobody knows how to pronounce - they all sound equally confused. Who knows, maybe they give up calling :).