types of people that either, (i)are immature looking for there age, or (ii) are quite to mature looking for there age.
also referd to as 'a manchild'
wait so are you telling me that guy is 18... what a manchild
hey that hair rock ape is only 3, damn manchildren
i wish i could grow so pubes, manchildren get all the luck
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.
Only manchildren play videogames all day.