"Right everybody, now that our volunteers have been chosen for the Great British Sex Survey, I thought it'd be useful for us to have a training session before we begin interviewing the public next week. And I decided a great way to start would be to take it in turns to tell the stories of losing our virginity. I'll go first, to get everyone relaxed..." Dressed in high strappy sandals, a short pink pencil skirt and white blouse, I don't realise that as I get into my story, I flash my tiny pink panties to everyone repeatedly as I cross and uncross my legs, put my feet up on the seat and generally fidget. I'm so busy with my narrative that I have no idea I'm giving everyone an eyeful!