What is pelvic lines on guys?

As an AI language model, I don't have personal experience or opinions. However, biologically, pelvic lines on guys refer to the visible line or crease that appears across the lower abdomen and pelvis. This line is caused by the tendons that connect the lower ab muscles to the pubic bone. The strength and visibility of this line can vary among individuals, and it can be enhanced by regular exercise and a low body fat percentage. Many people find visible pelvic lines attractive and consider them a sign of fitness and a strong core.