Related Clues:

• Word of warning
• 1958 Presley #1 hit
• Meaning of 'cave'
• Quip, part 2
• 1958 Elvis song
• Faux pas
• 'Watch out!'
• No-no
• Quote, part 5
• One-word advice
• 'Cut that out!'
• Heed
• Stop order?
• 'Stop it!'
• Parental command