This one is...um...kind of just a little bit completely terrible so...bear with me here. 

School is a doctor's visit,

A shot in your rear-end;

It hurts while you are at it,

But after, in the end,

It helps you to find your way.

Say, in a year or so,

You go to the store one day.

But when you're young -school, NO!

So you're just walking around,

(You have just 15 bucks)

Cool! A tiny, minute town!

And cool mini dump trucks!

You pile the cart, pile it high,

With Christmas gifts load it,

You give a long, gleeful sigh,

The cashier says, "Hold it!

"You need to pay for your truck.

That'll be thirty-two."

You give the 15 bucks.

He looks at it, then at you.