Grown syndrome

When someone acts older than their age thus making them look younger and dumb.

shitskia: I'm in love I know I'm only 14 but it might just be real!

Tanishia: Gurllll you got a bad case of grown syndrome

by XOTWODOVO July 10, 2016

Grown Kid Syndrome

A grown person 18 or over the age of 18.
That still lives with their parents.
Still watches cartoons, and eats cereal.

A grown person that still wants to be a kid.

Whoaa, did you see Carter ?
Yeah that nigga has grown kid syndrome.

by KyraWhite September 21, 2008