DEUT1257 Concerning the adultery of the mouth and the ear – which means to speak obscenities or to listen to them – they "squawked like cranes" and said (Yerushalmi Terumos 1:6): "'And let [the Eternal] not see any sort of nakedness [ערות דבר] among you' [this verse] is referring to the 'nakedness' of speech, [ערות דבור] i.e., obscenities in speech." And they said (Shabbos 33a): "Because of the sin of uttering obscenities tragedies occur in the youth of the enemies of Israel [a euphemism for Israel itself] die," and (ibid.), "Whoever uses filthy language is given the depths of Gehinom," and (ibid.), "Everyone knows why a bride stands under the marriage canopy, but anyone who pollutes his mouth in speaking of this will find that even a decree of seventy good years is converted into [a decree of misfortune." And they have said (Chagigah 5b): "Even a frivolous conversation between husband and wife is reviewed at the moment of his judgment." With reference to this evil type of listening, they added (Shabbos 33a): "This includes even the one who [just] hears it and is silent, as it says (Mishlei 22:14), 'He who has incurred the Eternal's wrath shall fall therein.'" So you see that all the senses must be cleansed from promiscuity and whatever relates to it.