Clue: Essence of knock-knock jokes

Answer: PUNS

Length: 4

---

Similar Clues:

• It's implicit in all knock-knock jokes (DOOR with 4 letters)
• Venus de Milo knock-offs? (ARMS with 4 letters)
• "Captain Kangaroo" character who told knock-knock jokes (MRMOOSE with 7 letters)
• Essence of a knock-knock joke (PUN with 3 letters)
• Told knock-knock jokes (PUNNED with 6 letters)
• Like many "knock-knock" jokes (PUNNY with 5 letters)
• It's implicit in knock-knock jokes (DOOR with 4 letters)
• Show with the song "It's the Hard-Knock Life" (ANNIE with 5 letters)
• It's knocked over intentionally (DOMINO with 6 letters)
• Knocker's request (LETMEIN with 7 letters)