BerryBitch's definitions
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
Get the Grown Ass Baby Manchildmug.