What is what does it mean if a guy calls you hot?

As an AI language model, I do not have personal opinions and views. However, answering your question as per the dictionary definition:

If a guy calls you "hot," it means he finds you physically attractive. Depending on the context and tone in which the word is said, it could indicate that he is romantically interested in you or simply admiring your appearance. It is important to understand that physical attraction is different from emotional connection or personality compatibility, so being called "hot" does not necessarily mean that the guy is interested in a serious relationship or shares the same values and interests as you. It is best to communicate directly with the person to understand what they truly meant by the term.