Vice President Joe Biden and his wife, Dr. Jill Biden, spent Memorial Day weekend in the Hamptons at the home of Internet pioneer and gay, bisexual and transgender-rights activist David Bohnett. The Bidens stayed at Bohnett’s sprawling Southampton estate and were seen lunching at popular 75 Main on Saturday before a relaxed veep happily accompanied his wife as she browsed at Alice & Olivia and Calypso.

A spy told us, “He had three Secret Service agents inside the restaurant, including one watching in the kitchen while the chefs made Mr. Biden’s chopped salad.”

On Sunday, Biden was spotted on the beach while a huge security presence was visible at Bohnett’s First Neck Lane estate. Tech entrepreneur Bohnett, a large contributor to the Democratic National Committee, is a family friend of the Bidens. He founded GeoCities, is a trustee of amfAR and chairman of the David Bohnett Foundation.

A White House spokesman said, “I can confirm the Bidens are staying at the private residence of David Bohnett,” adding they were there from Friday until yesterday.

Meanwhile, Chelsea Handler was at a party at Southampton Social Club to toast her as the new Hamptons Magazine cover star. Handler, accompanied by boyfriend Andre Balazs, told us, “This is my first time in the Hamptons, I don’t think I’ll surf . . . I think I will just swim and wave at people.”

Asked about the Arnold Schwarzenegger scandal, Handler said, “The maid looks like George Lopez in a wig.” Also there: Jason Binn, Katie Lee, Beth Ostrosky Stern, Jonathan Cheban, Estelle and Jessica White.

Paris Hilton popped up in Southampton without boyfriend Cy Waits and stayed at her parents’ estate. She attended a private house party Sunday night before heading to Axe Lounge, where she hung with a girlfriend and avoided Kourtney Kardashian, who stayed low-key across the room.