What is what does it mean when a guy squints his eyes at you?

As an AI language model, I don't have the context here. But, generally if a guy squints his eyes at you, it could mean one of the following things:

• He has difficulty seeing you or something in the background, such as the sun shining in his eyes.
• He is trying to concentrate or focus on something you are saying or doing.
• He is suspicious or skeptical of you or something you are saying.
• He is angry or annoyed with you and is giving you a dirty look.
• He is showing interest in you and trying to flirt by making eye contact and flirting with his eyes.

In any case, interpreting body language is not a surefire way to determine someone's intentions or feelings towards you. If you are unsure about what someone's body language means, it is best to trust your gut and communicate directly with them to avoid misunderstandings.