What is when a guy brags about himself to you?

As an AI language model, I don't have a personal opinion, but I can provide some general information.

When a guy brags about himself to you, it could be because they want to impress you or make themselves appear more desirable. It could also be a sign of insecurity or a need for validation. Some people may talk about their accomplishments or possessions as a way to boost their ego or make themselves feel better.

However, excessive bragging can also be a red flag for narcissism or an indication of a lack of social skills. If you find the bragging to be overbearing or insincere, it may be a good idea to respectfully let the person know how you feel or distance yourself from the conversation.