Rapper Nas was busted for DUI near his home in Henry County, Georgia, back on September 10. He was arrested, booked and released, with charges pending.

As luck would have it, he was back in court today in L.A. - for his divorce from Kelis - and if custody of their newborn becomes contentious, a DUI could be in play.

According to sources - Nas himself - he was driving under the influence of weed when he was busted for DUI. He just acknowledged as much in an L.A. courtroom.

Nas and Kelis in happier days, and pre-marijuana daze.

The police report on the Nas (Nasir Jones) incident says: "Mr. Jones had a green tongue with raised taste buds and his pulse was raised to 116 beats per minute."

The arresting officer says he observed "eyelid tremors in both eyes and body tremors." Cops say the car driven by the Illmatic rapper smelled of "raw marijuana."

Nas told officers he had been smoking weed at his friend's house before he was busted. He flunked a field sobriety tests by taking the wrong number of steps.

That's pretty much it.