Possible Clues:

• Rude retorts flow freely in some answers here
• Profanities (and a hint to this puzzle's anomalies)
• Many will find this clue made from such rude bits!
• This clue uses them
• Live television concern
• Will they make smut, rude bits, blue gags, even some vile oath that isn't very nice?
• Curses ... or what 18-, 20-, 26-, 48-, 57- and 63-Across are, literally?
• Text like this many deem tabu
• Some like ones here, most deem them rude
• They may be replaced with asterisks