There is no specific ear piercing that is universally recognized as the "gay side." The idea that a certain ear piercing indicates sexual orientation is an outdated stereotype and not a reliable or respectful way to understand someone's identity. If the question refers to the myth that pierced ears on a particular side of the head symbolize someone's sexual orientation, this belief originated in past decades but has no factual or cultural basis today. People of any orientation may pierce either ear or both ears based on personal style and preference. If more context or cultural history about ear piercings and associated myths is desired, that information can be provided. Would that be helpful to explore?