What is a polar bear coy?

There's no such thing as a "polar bear coy". It seems like you might be mixing up two different terms:

* Polar Bear: A large, white bear that lives in the Arctic regions.

* Coy: A term describing someone who is shy or hesitant to reveal their true feelings.

It's possible you're thinking of a phrase or concept that uses both of these words, but it's not a common or established term.

Could you provide more context or explain what you mean by "polar bear coy"? Perhaps I can help you understand what you're looking for.