Al: I tried to warn Skelos

“SENATOR Pothole” threw his old friend Dean Skelos under the bus.

Former Sen. Al D’Amato (photo) took the witness stand for the prosecution in the Skelos corruption trial Friday, testifying that he’d tried warning the powerful Long Island pol that his son was causing trouble.

D’Amato testified in Manhattan Federal Court that he reached out to old pal and fellow Republican Skelos in April 2013, four months after his son Adam started “working” at a medical malpractice insurance company called PRI.

D’Amato’s firm did lobbying work for PRI — and he’d heard from one of his colleagues that Adam wasn’t exactly a model employee.

“There was difficulty in that Adam was not showing up to work, and when he was at work, was disruptive,” said D’Amato, 78. “The young man was not coming to work” and “was very contemptuous.”

PRI head Anthony Bonomo had testified he’d hired Adam in December 2012 after his state Senate majority leader dad told him he was having trouble finding work. Adam was hired as a $78,000 a year “project manager” for the company, which relies on state legislation to stay in business. He was supposed to work 9-5 Monday through Friday, but announced on his first day he was only working two days a week, his former supervisor testified earlier in the case.

And Adam didn’t even do that. Bonomo said he told Skelos eight days after Adam started that he was blowing off work, but Skelos told him Adam needed the job and Bonomo should “just work this out.”