Taking aim at our founders

SO how you gonna keep ’em down on the farm after they’ve seen TV? Answer: If it’s Bill O’Reilly, you can’t.

Out Tuesday is his new Henry Holt book “Killing England: The Brutal Struggle for American Independence.” This latest in his killing series is a killer.

Besides blood, death, brutality, revolution, hatred, maiming, surgery without anesthesia and dysentery, he tells us:

Commander-in-Chief George Washington, 43, was a lover. His nick- name was the Stallion of the Potomac.

Hundred-dollar bill Benjamin Franklin? A chintz. A cheapo. Also a dissipate. Ben’s wife was common-law. And parttime, the guy got his jollies watching his mistress bathe.

Let us don’t knock today’s pols, who fall off the straight and narrow marital mattress. It goes with the territory. The book tells us Massachusetts’ wealthiest man, John Hancock, had an illegitimate child.

Back in the days of muskets, the classy Beacon Hill of Boston? It was known as Mount Whoredom.

And then there’s Thomas Jefferson. Besides being architect of our country, Tommy, 6foot-2, knocked off a few extras. Like dipping his quill into more than an inkwell. The guy, according to O’Reilly, had 10 baby Jeffersons.

Alexander Hamilton. Long before he hit Broadway, he was blackmailed for an affair with a married woman. His nice wife, who didn’t know about a prenup, forgave him. However, nice Lin

Manuel Miranda sort of went easy on Alex.

More: Our land’s indigenous people scalped the Brits alive. Philadelphia residents numbered 30,000 people. Fighting for independence, John Adams led the radicals. In 1777, a soldier’s pay — when he got paid — was $6 a month.

O’Reilly’s timing is perfect. This past Sunday — Sept. 17 — was the day in 1787 that America’s Constitution was signed. It is this week 230 years old.