Related Clues:

• 'Open up!'
• Big Bad Wolf's demand
• Door banger's demand
• Yell during a lockout
• What 'knock knock' may mean
• Knocker's request
• Pounder's cry
• "Open up!"
• Rapper's demand
• Admission demand
• [Knock, knock]
• Command from a rapper
• Shout accompanying knocking
• 'C'mon, open the door!'
• "Open this door!"