the term used when a baby is born, and is NOT a child but in fact a fully grown teenager, common among births where the couple were relations or step brother/sisters
an adult who acts immaturely and well, childishly. man children have lots of overlap beetween neck beards. typically they live with their parents and are unemployed, but there are exceptions. (though most who are employed are probably flipping burgers) they often have horrible social skills as well. man children often are obsessed with some kid's cartoon or pop culture stuff. they fill their rooms with toys, action figures and more. overall, man children are leeches to society. just like actual kids. even kidnapping them is harder to do than with children. you have a tub of lard to deal with after all. thus you need to upgrade to adult sleeping to get the job done.
mother: my god! clean your room! you have no job. you could at least clean your room!
man child: no! i gotta watch the new teen titans go episode!!!
mother: you are such a man child, son!
A term originating from Claude Brown's 1965 memoir "Man-Child in the Promised Land" about growing up in the streets of 1940s and 50s Harlem, NYC, one of the earliest and most powerful accounts of ghetto life and its culture. A "Man-Child" originally referred to a boy or adolescent from the streets who was prematurely exposed to and knowledgeable about sex, violence and crime, incarceration, adult responsibility for younger siblings due to a dysfunctional home, and hustling to make a living.
You think life in the 'hood is rough now? Check out Brown's book one day. By the time he was 15 he'd already been locked up, hustling for a living and doing whatever he had to to survive as a man-child on the streets.