Both boys and girls have breast tissue. Normal breast development first appears shortly after birth, and then again at the beginning of puberty. The timing of breast development varies greatly from one person to another and in some girls may not occur until well into the teenage years. Here's an overview of some of the main breast abnormalities that can occur in children. Baby girls and boys will have a small breast bud that can be felt for a few weeks after they are born. These buds of tissue will become the breast tissue in the adult.
It is possible for a boy at about the age of or older to develp a lump in their breast. It will make your breast bigger like man boobs and kind of lumpy and pointy. Your breast will feel tender and will hurt a little when they are hit or tapped. They occur because their is an imbalance of your hormone level. A male teenager might have a little more estrogen female's have this and less testosterone males. It may intend to be very embarrasing and yes it is. I am 14 and I have it.