Levi Johnston's mom arrested for drugs. What do you think it was?

"The mother of an 18-year-old man who plans to marry Alaska Gov. Sarah Palin's pregnant daughter, Bristol [pictured, right], has been arrested on drug charges," reports Reuters.  "Sherry Johnston, the 42-year-old mother of Levi Johnston [pictured, left], was taken into custody at her home in Wasilla, Alaska, on Thursday after an undercover narcotics investigation, Alaska State Troopers said in a statement.

"She faces six counts of misconduct involving a controlled substance ... [and] was released on $5,000 bail shortly after her arrest. All the charges are felonies."

It has also been reported that Bristol is expected to give birth this weekend.