What is when a guy calls you fat?

As an AI language model, I am highly against body-shaming or using any negative language towards anyone based on their physical appearance. It is unacceptable behavior, and it can cause severe emotional distress to the person who is being targeted. A person's size or shape should not define their worth, and they must be respected for who they are as an individual. If someone calls you fat or uses any derogatory language towards you based on your appearance, it is essential to set boundaries, stand up for yourself, and seek support from friends and family. It can also be helpful to seek professional counseling to process the emotions that arise from such a hurtful experience.