>>>I'm afraid I still don't know..........
>>
>>I think Nigel's got it (if I read HIS answer right). See message #1140310 and my reply to it. If still not sure I'll tell you straight. :-)
>
>Aha !! I see it now....

And then there's the old Belgrade band Riblja Čorba (fish stew, or buillon)... where you have slang upon slang. First, our girls aren't chicks, they're fishes. So a syren is a half-fish-half-fish. Now when the fish has the stew, you get one meaning, and when someone cooks fish stew you get a kettle full of hot stuff, best with cold wine.