Possible Clues:

• Emphatic denial
• Emphatic refusal
• Reiterated refusal
• Emphatic turndown
• Reply to a pushy person
• "Stop asking me!"
• Preceder of 'And that's final!'
• Parent's ultimatum
• Reply to 'Aww, Mom, ple-e-ease?'
• Words before '... and that's final!'