What has 4 letters, sometimes 9 letters, but never has 5 letters.

[pscot]

[shenmue]

1. Alphabet soup?

[unblock]

2. indeed.

[Staph]

3. A hint for those confused...

three sets of quotes will resolve this nicely.

[Freethinker65]

4. True

[rickford66]

5. What, sometimes, never

[pscot]

6. Yes

[3catwoman3]

7. Very slick.

Very slick, indeed.

[First Speaker]

8. Who's on first?

[SeattleVet]

9. Yes, that is absolutely correct. nt

[redwitch]

10. covfefe?

I am bad at riddles.

[jmowreader]

13. It's not a riddle

Count the letters in the words "what," "sometimes" and "never."

[Fla Dem]

11. That's very good. All in how you interpret the statement.

[Leith]

12. Yup

[Jakes Progress]

14. Ah. No question mark.

Nice.

[m.summers]

15. it's easy

What - 4, sometimes - 9, never - 5

[mahatmakanejeeves]

16. Yes. NT

[pscot]

17. This op is like a lost gill net

that drifts through the ocean randomly catching fish until the floats fall off and it sinks to the bottom.

[Thor_MN]

18. Knock, Knock.

Who's there?
The Owl says.
...

Exactly.