A brother is the name of a young man, or a beloved person. Calling little brother is a kind of address for young people. Generally speaking, everyone likes to call a younger boy "Little Brother", and he is handsome, lively and active, full of youthful vitality and positive energy. This is a respected name. For example, there is a takeaway brother in the society, because takeaway is not afraid of hard work, and your order is delivered to you on time. You can enjoy food without running errands, and you are grateful to them, so you are called takeaway brother. Everyone calls you takeaway brother and likes you.