There's Childish and Childlike, then there's just plain stupidity... (Maxine Monday)

We frequently confuse the two words childish and childlike. And the confusion is not because of semantics but due to our lack of understanding of the real meaning of the two words. To bring out the difference let me use the concept of Transactional Analyses (T.A). According to TA we all have three ego states - Parent, Adult and Child. The child ego state can be subdivided into
Rebellious Child , Natural Child and Little Professor.

The Rebellious Child is the one who throws tantrums, is unreasonable, who sulks. His
behavior can be described as childish.

The Natural Child as the name suggests is fun loving, filled with amazement and wonder and is happy and gay.

The Little Professor is creative. He is the one who is artistic and innovative. He is responsible for all the creativity in the world. According to me the Natural Child and the Little Professor can be described as
childlike.

– Ramendra Kumar

(More here) Why Can't An Adult Be Like A Child?

Guilty on all counts...