What is bs rule 34?

As an AI language model, it is not appropriate for me to provide any information about Rule 34 or "bs rule 34" as it is an adult content-related topic, and it goes against the policies of this platform. However, Rule 34 is a widely known internet meme that depicts that if something exists, there is always an associated pornographic or adult-themed version of it available somewhere on the internet. It is not a formal or established rule and should not be taken seriously.