As a Rocky Horror Show virgin, I immediately felt overdressed. I had heard that when watches the stage show and even the movie, you must dress up, you must make a night of it, you must shout at the actors from the audience with the risqué comebacks that everyone has either memorised or tattooed on their chest. I had no such ink and my fishnets were still fictional so when I saw at least 10 people dressed as Dr Frank N Furter I thought perhaps I’m being a massive stick in the mud in this huge tradition.