I turned 22 yesterday. It was scary for a while. 22 is not the age immortalised in songs; limited to 'solah-satrah' or even a 40 year singer singing about being 18. Only thing there is, is Catch 22, and that's not good.
Then I turned to the newspaperss. Dennis hasn't grown old, neither has Calvin. Then Spiderman and Superman are also the same, albeit a bit older. That made me happy.
Cartoon characters and/or superheroes don't grow old. They remain the same.