New Slang

When I was little, my sister and I shared a drawing pad that we both scribbled on. One day I picked up the pad and found something confusing:

Julie had written, in big, puffy block letters, "New Kids on the Block Rules".

I remember turning the page of the drawing pad. The rest of the book was blank. I flipped back to "New Kids on the Block Rules" and studied the margin of empty space beneath the block letters.

Nothing.

Why did she not include the rules that she had clearly planned to list, I wondered? And what were those rules, those... New Kids on the Block Rules?