Yellow Book Commercial Question

The gist of this commercial is to get you to use the Yellow Book, correct?

I mean this book is what used to be the Yellow Pages, right?

So the phrase (if I am remembering correctly) is: “Get the Yellow Book, not the other book!”, correct?

But then they end the commercial with the number: 1-800-YB-YELLOW.

Say that out loud to yourself and when you do, ask yourself if YB (I know it’s an abbreviation for “yellow book”) isn’t telling you not to use the book?

Just always struck me as odd. You?

Thanks

Q