Be a Child

Fulfill your childhood now because, unfortunately, there will be a time when you can't.

Build a fort with some friends.
Have sleepovers; try to stay up all night.
Jump on a big trampoline.
Jump in a pile of leaves.
Have a snowball fight.
Play in the mud.
Ring doorbells and run.
Watch Saturday morning cartoons.
Skateboard, surf, water ski, snowboard.
Laugh at farts and fart jokes.
Swing on a swing set; spin on a merry-go-round; slide down a slide.
Try to dig a hole to the other side of the Earth at least once in your life.
Play Pokemon on Gameboy.
Buy a Hotwheels or Matchbox car.
Hide under the bed.

If you think of any I missed, express yourself.