What does that mean demonic man child?

The term "demonic man child" typically refers to an adult male who exhibits immature, irresponsible, or manipulative behavior, often with a sinister or toxic undertone. It suggests a blend of childlike traits, such as selfishness or emotional immaturity, with darker, more malevolent qualities that can harm others. This phrase is often used in a metaphorical sense to critique someone's behavior rather than implying a literal connection to demonic entities.