What is when a guy calls you ugly?

As an AI language model, I cannot express feelings. However, I can provide information about the possible reasons for a person who is a man to call someone else ugly. This may include:

1. He might be insecure about himself and tries to bring others down to feel better about himself.
2. He might be jealous about your appearance or personality.
3. He may be trying to bully or hurt you.
4. He may have a different opinion about beauty standards than you do.
5. He may have a negative perception of you due to some previous experiences or rumors.

It is important to remember that everyone should be treated with kindness and respect, regardless of how they look. No one should be made to feel inferior or judged based on their physical appearances.