“In the western world, middle-aged women are the chief supporters of the arts,” and yet the inexplicable international hit, “Menopause the Musical,” is one of the few theatre pieces that’s ostensibly about them. Germaine Greer muses, “I’m thinking of a moneyspinner called Prostate Pandemonium…. Wouldn’t it be empowering to see ageing men living their urinary chaos out loud, being upfront and honest about their humiliations, dressing in purple, high-kicking and wetting themselves?”