| Answer | Crossword Clue |
|---|---|
| ONEBC | The first century started when it ended |
| IRONAGE | When it started, the world population was around 50 million |
| DST | It ended in the first week of Nov. 2008 |
| WHO | It becomes another question when its first letter is moved to the end |
| PUN | According to Oscar Levant, it's "the lowest form of humor--when you don't think of it first" |
