Related Clues:

• Gave testimony
• Insisted absolutely
• Used colorful language
• Promised
• Insisted
• Blasphemed
• Talked like a sailor, stereotypically
• Risked getting bleeped
• Risked an FCC fine
• Talked X-ratedly?
• Promised or pawned
• Took oath or cursed
• Uttered profanities or avowed
• The cursed South had this on
• Said some bad words