Reply To: Bad Words Home › Forums › Decaffeinated Coffee › Bad Words › Reply To: Bad Words November 22, 2011 1:22 pm at 1:22 pm #829284 Sam2Participant We assume that Nivul Peh includes 4-letter words, but the Gemara (Shabbos 33a) might seem to imply that it only includes talking about inappropriate (Arayos) things.