The table reading of the episode was held on Wednesday, December 12, 1990. Julia Louis-Dreyfus stated, “I read the script and I remember thinking, ‘We’re not going to do this.’” According to Alexander, when she read a scene in which she holds the gun to her head stating, “Where do you want it, Jerry? The Kennedy? [holds the gun to her stomach] The McKinley?” (referencing the assassination of the two American presidents), Louis-Dreyfus turned to Alexander, stating, “I’m not doing this.” Both Alexander and Cherones, who would direct the episode, felt that the gun content in the story was too provocative.
https://seinfeld.fandom.com/wiki/The_Bet