Related Clues:
- Causes of grins and groans
- Some George Carlin jokes
- Painful plays on words
- This puzzle's theme entries, e.g
- Full-groan jokes
- Some Groucho Marx humor
- They often elicit groans
- The lowest form of humor, it's said
- Word plays
- Wordplays
- Essence of knock-knock jokes
- Knock-knock jokes, essentially
- Verbal groaners
- "Alice in Wonderland" features
- Clever turns of phrase