My observation of a 30-something-year-old who's continuous childish antics has me reassessing what constitutes childish behaviors. I'd like to share a post from a blog that I follow:
Childish vs. childlike
Childlike makes a great scientist.
Childish produces tantrums.
Childlike brings fresh eyes to marketing opportunities.
Childish rarely shows up as promised.
Childlike is fearless and powerful and willing to fail.
Childish is annoying.
Childlike inquires with a pure heart.
Childish is merely ignored.
(Posted by Seth Godin, 11/05/10 from http://sethgodin.typepad.com/)
SO GROW THE FRACK UP!