To lighten the mood a bit:

REALLY IMPORTANT STUFF KIDS HAVE TAUGHT ME

It's more fun to color outside the lines.

If you're gonna draw on the wall, do it behind the couch.

Even Popeye didn't eat his spinach until he absolutely had
to.

If your dog doesn't like someone you probably shouldn't
either.

Even if you've been fishing for 3 hours and haven't gotten
anything except poison ivy and sunburn, you're still
better off than the worm.

Sometimes you have to take the test before you've finished
studying.

If you want a kitten, start out asking for a horse.

There is no good reason why clothes have to match.

If the horse you're drawing looks more like a dog, make it a
dog.

Save a place in lines for your friends.

Just keep banging until someone opens the door.

Making your bed is a waste of time.

Make up the rules as you go along.

It doesn't matter who started it.

Ask for sprinkles.

Hang on tight.

Ask "why" until you understand.