Related Clues:

• Used curse words
• Spewed obscenities
• Vowed southwest will get valuable mineral
• Said a 96-Across
• Took an oath in court
• Raised a right hand in court and vowed
• Pledged an oath
• Needed to put money in a jar, perhaps
• Used cusswords
• Had a potty mouth
• Used a naughty word
• Used words that would be written as "@#&%" in comic books