Comedian Jon Lovitz finally had enough of fellow comic Andy Dick and his immature behavior/act and beat the nimrod up by bashing his head into the bar several times at the Laugh Factory.

Laugh Factory owner Jamie Masada, who witnessed the assault, said, “Jon picked Andy up by the head and smashed him into the bar four or five times, and blood started pouring out of his nose.” Lovitz told Page Six, “All the comedians are glad I did it because this guy is a [bleep]hole.”

Lovitz and Dick have been at loggerheads since a 1997 Christmas party at Hartman’s house, five months before his troubled wife Brynn flipped out, fatally shooting Hartman, then killing herself. “Andy was doing cocaine, and he gave Brynn some after she had been sober for 10 years. Phil was furious about it - and then five months later he’s dead,” said Lovitz, adding that when he filled in on Hartman’s “Newsradio” sitcom, “I told Andy, ‘I wouldn’t be here now if you hadn’t given Brynn that cocaine.’ ”

“I grabbed him by the shirt and leaned him over and said, ‘I don’t want to be in your movie! I don’t want to be in your life!’ I pushed him against the rail. Then I pushed him again really hard. A security guard broke it up. I’m not proud of it . . . but he’s a disgusting human being.”

I have never understood why Andy Dick is a celebrity and why anybody would allow him to be on TV. Phil Hartman was the best comic of the three. Lovitz performs regularly at the Laugh Factory on Sunset Boulevard in Los Angeles.