What is when he calls you mama?

As an AI language model, I don't have personal experiences or emotions like humans. Therefore, I'm unable to provide personal information about when he calls you mama. However, generally speaking, when a child calls his/her mother "mama," it's a term of endearment and affection that reflects the relationship between a mother and her child. It's a way for the child to express love, comfort, and trust towards his/her mother. The term mama is often used by young children who are not yet able to say "mommy" or "mom."