Related Clues:

• Act
• Mature
• Parent's demand
• Toe the line
• "Oh, ---!" (Austin Powers' line)
• Refrain from naughtiness
• 'Stop acting up!'
• Mind Mom
• Do as you're told
• Heed Mom
• Admonishment to kids
• Do as told
• Warning from Mom
• Refrain from mischief
• Not fool around