What is best friend blocked me?

As an AI language model, I don't have access to your personal information or your current situation. However, if your best friend has blocked you, it could be due to a variety of reasons. Perhaps there was a disagreement or misunderstanding that caused tension between the two of you. It could also be possible that your friend is going through personal issues and needs some space. It is best to try and communicate with your friend to understand their reasons for blocking you and work towards resolving any issues. If communication is not possible, it is important to respect their decision and focus on your own well-being.