It's the big talked-about movie, but apparently, there is a big "Bird Box" problem.

"Bird Box" is the Netflix-only movie that is being talked about on all sorts of social media sites. The movie stars Sandra Bullock, and features other well known actors including John Malkovich and Sara Paulson. The movie is about.... no, wait, we won't spoil it for you.

The movie, though, has apparently spun off The Bird Box Challenge. It's the latest online viral challenge - #BirdBoxChallenge. in the challenge, people are blindfolding themselves and carrying out all sorts of tasks while they can't see.

Now, Netflix has issued this warning:

So, there you have it. A warning from Netflix.

One more thing - can I borrow your Netflix password?