Simon is a bit cranky, and of course the other mom is there to help with advice and a product demonstration. "Other nappies are like a sponge, they wet through." While pampers, she declares, won't let the wetness back. "It's like a one way street" the freshly advised mum notes. And this leads us to the happy moment where Simon gets new diapers, and giggles, then happily plays piano. Or rather hammers on its keys. "And to think, before you couldn't play a note"