Here it is. It's not the backwards one.
HIja'. ghaH vISammeH was filmed, but they changed the subtitle, so Marc had to make it jIyI'. ghach jIvvo' naH which doesn't even match too well, as there's no labial to line up with the mm. I just remember seeing it in the theatre and having to disappoint the person who took a Klingon speaker with them so they wouldn't miss anything.
Not that there couldn't also be a pop culture reference. Marc is cunning that way.