There is a list of expurgated words from the official scrabble players dictionary. They were removed as part of a movement to encourage Scrabble play as a learning aid in elementary schools.
After a lot of work, the National Scrabble Association worked out an agreement to televise an all star match last fall, based in part to the success of “Word Freak”. It got pretty good ratings, thus ESPN decided to film the finals of this year’s National Scrabble Championship, which is a semi-annual event.
As part of the deal, the 100 or so words that are normally allowable were not to be played in the final best of 5 match that would determine the champion. Both players knew this ahead of time. But in the heat of moment, one forgot.