Shuffle under some Star of David stained glass windows and a rack of prayer shawls in a corner of the off-Broadway Actors Temple Theatre for this high-volume command at the start of its latest show: “Strap in! Strap on! And if it vibrates, put it between your legs!” There may not be enough exclamation points – or groans, depending on your fan status – for Cuff Me: The Fifty Shades of Grey (Unauthorised) Musical Parody, one of a few stage spoofs to take on the naughty books in song, and the first to hit New York.