Wondering about a school bus sign.

Yesterday on our way back from the post office, I stopped behind a school bus which was stopped at a red light.  I am one who takes things literally, which at times upsets people, especially my wife.  I noticed a sign on the back of this school bus and pointed it out to my wife.  Here is a picture of the back of the school bus:

And an enlargement of the sign I am talking about:

I mentioned to my wife that it was a good idea.  She said what is a good idea, and I said that if they don't ever allow the kids off the bus, then they couldn't cause anybody any trouble.  So, when I got home I wrote this fantastic poem (grin):

Can you read what the sign on the back said?

What does it mean?  I'll have to use my head.

If they do stop loading and unloading,

what will they do with kids by morning?

Staying on the bus will burst their bubble

but it will sure keep them out of trouble.

Keeping them there for ever and ever,

that could never happen, never, never!

Too bad. . . .

Now don't get me wrong, I love kids.  With out kids there wouldn't be any body to replace us old farts (grin).  I was just making fun of the sign which meant to me that it was against the law to load or unload the kids from the school bus.  BTW, I wiped out all the identifying features on the bus like its route number and license plate number to protect the innocent. . . Now you all have a great day, you hear?