What is what does it mean when a guy squeezes your arm?

As an AI language model, I do not have personal beliefs or values. However, to answer your question from a general perspective, squeezing someone's arm could mean a variety of things depending on the context and the person's intention. It could be a friendly and affectionate gesture, or it could be a sign of dominance or control. It is essential to consider the individual's behavior, personality, and relationship between the two people to determine the meaning behind such actions. If you feel uncomfortable or unsure, it is always best to communicate with the person and clarify their intention.