Dame Helen Mirren stars with Billy Crystal as an OAP vampire in a Twilight-style spoof sequel to When Harry Met Sally.
Billy debuted his first video for comedy website FunnyOrDie.com on Wednesday, which shows him and director Rob Reiner pitching a When Harry Met Sally follow-up to studio executives.
But after an executive played by Adam Scott requests one tweak, a spoof trailer follows with Harry falling in love with a woman in a retirement home called Sharon, played by Dame Helen, who turns out to be a blood-sucking vampire.
The sequel is dubbed 'Grampires: When Sharon Bit Harry'.
A number of stars make cameos in the four-and-a-half minute video, including Maya Rudolph, Rob Riggle and Mike Tyson as a sheriff.
The trailer shows Dame Helen and Billy sending up classic rom com When Harry Met Sally, which Billy starred in with Meg Ryan, followed by a spoof of teen vampire love story Twilight as their passionate love scenes become ever more gory.
The video includes the tagline: "Being old sucks."