Manchildren are the plural of manchild. Mulitple manchilds result in manchildren. This will result in chaos, the reason being because they have no traits of a mature man.
Bobby and his friends took his legos and threw them across the room. They are manchildren.
Manchildren are adults that engage in childish behavior too often -- eg. play videogames, collect figurines, watch cartoons meant for children -- instead of getting a job, studying responsibly and moving out of their mom's basement.
The older they get while refusing to grow up, the more pathetic they become. Manchildren can also be female.
The use of the word "blue" to refer to sexually explicit content was first recorded in Scotland in 1824. "Blue" meant "lewd" because prostitutes dressed in blue gowns.