Another sign of the collapse of the New York Times-dictated conventional wisdom that there’s just nothing funny about Barack Obama: on Tuesday, David Letterman devoted his Top Ten list to “Top Ten Signs Barack Obama is Overconfident.” And once you make it to the number-one reason, you’ll see it’s a two-fer! The man who can’t be joked about and the scandal that can’t be mentioned — all in one Top Ten list:

10. Proposed bill to change Oklahoma to “Oklobama”
9. Offered Bush 20 bucks for the “Mission Accomplished” banner
8. Asked guy at Staples, “Which chair will work in an oval-shaped office?”
7. The affair with Barbara Walters
6. Having head measured for Mount Rushmore
5. Guy sits around eating soup all day
4. He’s voting for Nader
3. Offered McCain a job in the gift shop at the Obama Presidential Library.
2. Announced his running mate will be Andy Dick.
1. Been cruising for chicks with John Edwards.