Wow....you made me think of something I had not in quite some time. My Dad was the leader of a band in a NYC nightclub. They often did something like that when my Mom and I visited him at work. Yes, and I do think it was called the Schnitzelbank. I thought it was a German thing, though.
Wish I could help you with the words. Hmmmm....let me search the net.
O.K. here's what I got....
Ist Das nicht ein Schnitzelbank? Ja das Ist eine Schnitzelbank
This was the version I am familiar with. Had no idea it was in Kashubian, too.
Did a search on the words you mentioned in the Kashubian version and came across a Pomeranian Forum.
Can't read it, but maybe this is what you are looking for?