LOU DIAMOND PHILLIPS was arrested for DUI in Portland late Thursday night . . . after he inadvertently TURNED HIMSELF IN.
According to reports, Lou drove up to a cop at 1:30 a.m. and asked him for directions.
The officer immediately noticed that he looked, quote, "highly intoxicated" . . . so he had him do a few field sobriety tests.Lou flunked them . . . and later blew a .20 on a breathalyzer, which is more than twice the legal limit.
Later, Lou posted bail and was released. And he's since apologized. He said,quote, "It was a mistake, [and] it'll never happen again."
But he still can't get arrested in Hollywood. #BlessIt