SCARLETT LETTER. Oh brother:

...according to Obama, Johansson is lying about trading lengthy e-mail exchanges. "She sent one email to Reggie, who forwarded it to me," Obama said, referring to his 26-year-old personal assistant, Reggie Love. "I write saying, 'thank you Scarlett for doing what you do,' and suddenly we have this email relationship."

UPDATE: Groan. A reader suggests, "I did not... have... textual relations with that woman, Miss Johansson."

I think McCain should press his advantage and announce he's been having a 10-year affair with Bo Derek.