Twisted ‘Harry’ sequel

Billy Crystal’s “When Harry Met Sally” has finally gotten a sequel in a new Web video that mixes in a bit of “Twilight.”

In his first video for comedy website FunnyOrDie.com, Crystal and director Rob Reiner pitch a sequel to the 1989 film.

A studio executive, played by Adam Scott, requests one tweak to Crystal’s plans: vampires.

A trailer for the mock results follows, with Crystal falling for another woman, Sharon – played by Helen Mirren – in a retirement community.

Sharon, though, turns out to be a bloodsucking vampire. The film is dubbed “Grampires: When Sharon Bit Harry.”

A number of stars make cameos including Maya Rudolph, Rob Riggle and even Mike Tyson.

The video is something of a family affair, with Crystal’s daughter Lindsay (a former producer on “The Daily Show”) serving as director and a script written by sons-in-law Howie Miller and Michael Foley. His grandchildren are seen in the background.

Crystal said the idea came to him at his grandson’s first birthday party, where he was dressed in a little Halloween vampire outfit.

“I said, ‘Oh, that makes me a grampire!’ ” said the 63-year-old comedian.

The video was shot with the help of FunnyOrDie, the site co-created by Will Ferrell and Adam McKay, over three days in Los Angeles.

“It all happened so fast,” said Crystal. “I wish movies could be like this.”