Postpone that Piss Stop with a leg scratch

Australian Physiotherapist Janeta Webb has found a way to surpress the call of nature, and it's not the 'pee-pee' dance. She posits that vigorously scratching or rubbing your calf can surpress the urge to urinate.
This might come in handy on that next long road trip. But does it only work on women?
Leg scratch 'controls' women's loo call (via smh.com.au)