A man who once called himself the “Banana King” of Long Island turned his employees’ pension plan into his “own personal piggybank” as he drained more than $750,000 to fund exotic vacations, luxury cars and trio of fancy homes, federal prosecutors told jurors Tuesday.

Thomas Hoey, 48, is on trial in Manhattan federal court for embezzlement, money laundering and other charges for allegedly stealing the funds for four years as head of Long Island Banana Corp.

“He lived in the lap of luxury made possible by the money he had stolen from his employees’ retirement plan,” prosecutor Kristy Jean Greenberg said in opening statements.

Hoey — who is serving time for assaulting his girlfriend and supplying cocaine in a wild three-way tryst that left another woman dead — has said he “borrowed” the money to try and save the floundering fruit company.

But Greenberg said “there is absolutely nothing to support that these were loans. Hoey did not borrow this money – he stole it.”

Defense attorney Dominic Amorosa downplayed the seriousness of Hoey’s conduct and said he disclosed the cash in question on annual tax returns.

“It’s not a traffic ticket. But it’s no big deal,” he said, adding that the funds were borrowed “in good faith.”