It also strikes me as a little bit hypocritical that you undoubtedly attempt to use "KiL STOKIN" as a method of diminishing Lord Tony's intelligence. "KiL STOKIN" is indeed a shortening of "Kill Stocking" that is completely understandable. You attempt portray that as unintelligent while, according to your argument, that is completely intelligent.
It kind of suggests that you don't believe what you are saying, or perhaps have rethought it.
Except "cuz" is used everywhere in the world where English is the native language, and it's one of the first colloquialisms children learn to utilize.
This is an English-speaking community, and as such, we don't write in strict prose or shy away from idioms so that Furling can understand us.
That doesn't take away from the fact that it is super redundant in its existence and nearly useless. On top of that the word "'cause" has existed much longer than "cuz" and is also more formal so it would make sense that the word "'cause" is what children are actually learning.
Also, just because you can make a word that people understand doesn't mean you should use it. It can remove the logic from the structures of words and make it extremely confusing to learn. Using such words just make it more difficult for others. Sure you are using it now inside of a group who understands it, but then it become a habit and commonplace which will temporarily confuse people who come across it.