Related Clues:

• ''If all ___ fails . . .''
• Goon's last words
• ''Or ___!'' (veiled threat)
• "... or __!"
• ''If all __ fails. . .''
• ''Where'' attachment
• Ultimatum's ultimate word
• ''Otherwise, you'll regret it!''
• ''Ask somebody ___!''
• If another choice is needed
• It often follows something
• ''If all ___ fails, read the directions''
• ''Anything ___'' (Woody Allen film)
• Threatening end
• Programming command