Lindsay Lohan may have sobbed as she was sentenced to 90 days in jail and 90 days in rehab Tuesday in a Beverly Hills courtroom, but her finger nails may have been sending a different message to Superior Court Judge Marsha Revel.

In a close-up shot provided by Associated Press, her middle fingernail read "F--k you."

But Today show chief legal analyst Dan Abrams tells USA Today that judge is "sending a message" of her own to the 24-year-old actress: "You can't thumb your nose" at the legal system, he said.

Lohan must surrender July 20 to begin her sentence.

She will likely be jailed at the women's Century Regional Detention Facility in Lynwood, Calif. It's a familiar spot for the actress: She served 84 minutes of a 24-hour sentence there about three years ago.