12.

"Mom, it is hard being 12."

I gazed at my son curiously and waited.

He continued, "Because at school we are all cool and mature, but the second you get home you just want to be a kid and play."

Play, my son, play.  I thought to myself.  Life and responsibility will quickly take these carefree days.

"But I have a little sister to play with."

Ah, a sibling to keep you young and let you play free.  I remember my little sisters gave me an excuse to swing at the park--my favorite though I was far beyond the years that it was cool.

"Play, my son, play!" I advised.