by Kelly A June 07, 2005
by Fatmatt January 05, 2014
by funeralbitch February 15, 2016
A large teenager who walks, talks and looks like he could be a man. He also has lots of body hair and needs to shave regularly.
by Ogreogre November 07, 2017
someone who always gets it wrong, every time!!! They will legit slip over anything from a leaf to a banana skin. They don't actually have a special need but act like they do, they also make terrible jokes that are often REALLY screwed up. They often spontaniously combust, this is believed to be God's work wiping up evolution's mistakes...
hello large cliff, i'm a special needs manchild. Oh look, a banana skin! Ahhhhhhhhhhhhhhhhhhhhhhhhh!
(you know what happened next)
(you know what happened next)
by GTR10000 teh sweglord June 10, 2016
When your an adult and you can't act your age, or, you can not for the life of you handle your alcohol.
When you see a man acting like a child and they are definitely an adult. When you see a drunk man trying to fight everyone. Then you call them a Grown Ass Baby Manchild.
by BerryBitch December 21, 2012
A male between the ages of 19 and 31 that is usually the boyfriend of a single mom. They are usually too immature to act as a role model and have a tendency to either be too inept to help watch children and do other parent stuff, thus becoming a burden; or will beat/kill a child over something that's not a big deal, for example, a video game.
Person no.1: did you see her boyfriend
Person no.2: yeah, dude looks too much like he could be a step-manchild
Person no.2: yeah, dude looks too much like he could be a step-manchild
by Caesar_Destroyer_of_Normies January 14, 2019