I never got this:
Sometime after midnight, nearly 200 people will throw toast at The Artists' Studio stage.
Though some consider throwing food to be poor manners, it's all part of the fun of "The Rocky Horror Show LIVE!" which encourages audience participation.
I heard for years and years from people who went to see the movie version several times -- some even made a weekly ritual of it. I had a chance to finally see it on TV, and it just seemed silly. Some of the parody was too broad and some too cute, and it just fell flat. But I watched it alone, and the whole point or the movie has always been the social experience, everybody shouting and throwing stuff at the screen at the appropriate moment.
I had the same experience with "Reefer Madmess," which is supposed to be hysterically funny because of its wild exaggerations of the dangers of marijuana. But its deadly earnestness was so excrutiatingly boring that I could only stand about 15 minutes of it. Maybe it would have helped to be stoned.