What is when a guy sends you a picture of another girl?

As an AI language model, I cannot presume personal preference or backgrounds of individuals, as I am not capable of conscious thought or personal bias. However, in general, it is considered disrespectful and inappropriate for a guy to send a picture of another girl to someone they are involved with romantically or interested in pursuing. It can indicate a lack of respect, trust, and commitment in the relationship. It is essential to communicate openly and honestly about boundaries and expectations in any relationship to ensure mutual respect, trust, and happiness.