I remembered that book from childhood, though a lot the words are a stretch. I even remembered a particular pair of lines and was able to find the text of the book.
KT S DZ.
I C Y. (With an illustration of Katie twirling)
From the book’s wikipedia page below:
CDB - Wikipedia!
I learned these are called gramogram, grammagrams or letteral words.
ICWYDT !
My dentist was named Abie.
It’s not a perfect match, but WT for deputy.
B4
CDB (A whole book of these)
A friend of mine played a droid character in one of our Star Wars Roleplaying Game campaigns; she named her character 2B-R0-2B (“To Be or Nought To Be,” with the zero in the name read as “Naught”).
Katie - KT
Evie - EV
A song full of them by TMBG:
DGNR8 - as seen on t-shirts
I once did a job for a vet who’s car registration number was V8NRY
(or V80NRY - i can’t remember)
Queue - Q
Huh. I always thought RB stood for “roast beef.”
My son studied Tae Kwan Do, and was describing belt levels to me. He called the red and black striped belt a “WD black belt” (pronouncing the W). Of course he’d misheard “deputy black belt.”
I did, too, until I read my own cite.
There is a sequal to the CDB book. Not as good.
We had a copy of CDB floating around the house. One of my brothers would always read one page (O U QT, U R A BUT) as “Oh, you cutie! You are a butt!”
Are we related somehow? My brother did the same thing. 
6UL DVNC
(yes, Discourse, this is a complete sentence)