Virility is when a man is able to have babies with a lady. His body has some special parts that help with this, like his testicles, which make special cells called sperm that can join with a lady's egg and make a baby. Virility also means a man has some muscles that are really strong, and he has a lot of energy to do things like running and playing sports. Some people also think that virility means a man is brave and strong and able to protect others. Overall, being virile means a man is really good at making babies and doing manly things.