This is the 6221st most frequent Polish word.
bayer
"Bayer" in Polish slang means a clever trick, gimmick, or a catchy element.
Here 'bayer' is used informally to mean a trick or a method.
Czy znasz dobrą bayer na ten problem?
Do you know a good trick for this problem?
In this context, 'bayer' refers to a characteristic or notable feature.
To jest niezła bayer tego systemu.
That's quite a clever feature of this system.
Here 'bayer' denotes an interesting or unique idea or strategy someone frequently uses.