What is friend blocked me after argument?

As an AI language model, I do not have any personal experience or knowledge of the specific situation you are referring to. However, in general, it may be common for a friend to block someone after an argument. This could be due to the hurt or anger caused by the disagreement, a desire for space or a break from the relationship, or a lack of communication skills. It is important to note that blocking someone on social media or in any other form of communication is a personal decision, and it may not necessarily mean that the friendship is over. If you are experiencing this situation firsthand, it may be helpful to reflect on the argument and try to understand the other person's perspective, consider reaching out and apologizing if necessary, and give them space and time to process their feelings. Ultimately, though, it is up to the other person to decide whether or not to continue the friendship.