(A) The box rules do mention that the initial word placement must cover the center square, yet the "Official Tournament" rules make an exception in that a word may be placed anywhere on the board and scored, such that the placement was not challenged by the other player before taking his/her turn. This rule is similar to the permissivity of letting bogus words remain played on the board. Though often, or sometimes, noted separately, records of official games that involve bogus words are still found in the record books.
(B) On the contrary, prior to 1976 there was no mention of disallowing slang words in the Scrabble rules, and the rule changes that occured in 1976 and afterward have specifically mentioned that slang words ARE permissible (as long as each word is in the acceptable dictionary, and, like all other unchallenged words played, is not always capitalized, not designated as foreign, not an abbreviation, not a prefix or suffix, and does not require an apostrophe or hyphen).
The word SPAZ is even utilized and noted in an "official" record for the current record for the highest combined score of a theoretically played game consisting of all valid Tournament Word List (TWL) words. The 3996 point solution was first presented by Austrailia's Nathan Hedt, and can be found in some Scrabble record "books" and Scrabble trivia websites.
Not valid in tournament play, but it is a word not invalidated by the "box rules." Scrabble "box rules" (1976 and onward) permit the players to choose any standard dictionary for their game. The word EW, as an abbreviation for electonic warfare, is, of course, invalid. Yet, the word can be found in the 1913 edition of Webster's Revised Unabridged dictionary as a Chaucerian and obsolete variant spelling of YEW, and currently in the Oxford Dictionary as an informal interjection (also spelled EWW) used to express disgust or distaste. Just as there have been records that have permitted words like BENZOXYYCAMPHORS and SESQUIOXIDIZING (the latter not appearing in any standard dictionary), there should be records in Scrabble that permit the use of words like EW. Already existing are records where nonsense or otherwise ngly nonsensical words are used,such as those in Clabbers, a Scrabble variant where the letters of "officially" valid Scrabble words are anagrammed on the board, often into non-words.
*Slight correction: EAVESDROPPERS and TWEEZED are changed to EAVESDROPPED and TWEEZERS in order to achieve the 1688 score.
As RecordSetter does not show any of my pending attempts under this category (except, I believe, in my own profile), I will note here that the highest possible scoring play I have been able to construct on a WWF board is 1688. Six of the seven crosswords are the same as Tony Hall has used in my 1686 point solution, but with a few changes the crossword EX can be made to be EXpAT, permitting the additional 2 points. A possible, but unlikely, higher WWF score may still exist with the current acceptable words.
I disagree with your assessment, Tippy.
Using the word 'jew', outside its etymological origin, as the VERB meaning to 'bargain for a lower price' is not necessary racist, cruel or offensive. It can be offensive, but so can any word be so in an offensive context. In my experience of its actual use, the word's context did not relate with racism, cruelty, or offensive intent. On the other hand, I've heard many words that are accepted in WWF and Scrabble that have been used in a racist, cruel and offensive manner. If one was to deny a word as it usage as such, there would be no word playable in the games. One could equally proclaim that those who denied these words to those who would play them are being racist, cruel and offensive.