Top Definition
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.
#grown #kid #syndrome #adult #child #grownkid
by KyraWhite September 21, 2008
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