Just when I was starting to lose faith in humanity a heart warming story like this comes along.

Everyone who remembers Diamond as a lovable putz is in for a shock once they see a 40-minute video in which he engages in a kinky three-way with two women, sources tell us.

We can’t get too graphic here, but word is that the action includes some bodily functions and an act known as a “Dirty Sanchez.”

David Hans Schmidt, who has brokered some of Hollywood’s biggest celebrity-skin deals, confirms that he’s acquired the rights to a tape featuring Diamond.

“Just when you think you have seen everything in this business,” he tells us, “mankind has raised the bar another notch. Or lowered it.”

Schmidt is in L.A., shopping the tape to Hustler’s Larry Flynt, Vivid’s Steven Hirsch and other major distributors of adult video.

Screech’s handler Roger Paul says he hasn’t seen the tape, but has heard “Dustin has been trying to escape the Screech typecast. So this may help me get more bookings.” I can see why Dustin would want to release such a tape, getting naked on camera worked wonders for Elizabeth Berkley’s career. (In 1996, former “Saved by the Bell” sweetheart Elizabeth Berkley bared all Show Girls.)

The only thing I can add: Screech is a nasty bastard and I’ll be washing out my mind’s eye with a mixture of Clorox, Lye and Turpentine shortly. If you’re wonder Dirty Sanchez defined here and ain’t for the faint of heart. He could have at least gone for a naughty trick with show-biz roots, for instance who’s the boss.