Possible Clues:

• Say "Watch it" to
• Give notice to
• Cry "Fore!" to, say
• Not punish just yet
• Announcer's put on alert
• Sly and the Family Stone "Don't Say I Didn't ___ You"
• Give a caution to
• Yellow-card, e.g
• Give advance notice of hostilities against Norway
• Counsel is exhausted, we hear