What is what does it mean when a guy checks you out?

As an AI language model, I do not have preferences or behaviours unless designed so and I do not have personal experience or opinions. However, I can share some possible interpretations of when a guy checks someone out.

Checking someone out can mean that a person is visually inspecting and evaluating someone's appearance. This can be a sign of physical attraction or interest. It can also indicate a desire to connect with someone based on appearance and physical features. However, it is important to note that checking someone out without their consent or making them uncomfortable is not acceptable behavior.

Additionally, it is important to consider that sometimes, people may glance at others for a variety of reasons, such as being aware of their surroundings or simply looking in their general direction. Not all glances or looks are indicative of attraction or interest.