What's the difference between biology and sociology? When the baby looks like his dad or mom, then it is biology. When the baby looks like the neighbour, then it is sociology. Why is breast milk good for health? Because it is great for blood circulation, provides heat, is refreshing and comes in attractive containers. Mother was scolding the daughter, "I don't like the guy you are going out with. He is too dumb." "No, momma," she said, "He is going to be a doctor and he has already cured me of that illness that I used to have every month!"