After a rather poor sex session, my girlfriend was sat on the edge of the bed, close to tears."What is it honey?" I asked, slipping my arm around her. "What's the matter?""Oh baby", she sobbed "You'll think I'm being silly. It's.. It's just.. Well, I just wish I was a teenager. Or at least early twenties.""Oh sweetheart." I chuckled, pulling her close. "Just a few more years and you will be."