I was doing an assignment for school and he was teaching me how to format and make it look pretty and formal, since I wasn't in primary (middle) schoo...l anymore. I wasn't horny at the time, but sitting straddling Dad's leg was rather quite "pleasant" in an unintended way. I wasn’t really paying it much attention or doing anything about it. After a while, however, I could feel my lips starting to tingle and my clit perk up under my tights. Only mildly awkward... So glad I wasn't a boy or it would. Now get on your hands and knees and my friend bro is going to give you a huge treat." As we got on our hands and knees the door opened and a naked man walked in and we just stared. He had a cock that hung almost to his knee. He was huge. He walked in front of us and rubbed his cock on our faces then slapped us with it. As we watched him the cock got hard and looked like a missle hanging on him. He said then to my step "These pussies look like they need a big cock." Then he went to us and told. A good luck charm. A showpiece. A conversation starter. And finally mine. My mother had phoned and told me he was on his way to me via courier, and I'd just taken him out of his case today, and placed him in an appropriate spot. I expected many comments from my friends in the days to come.I named him Dion, short for Dionysus. I knew that my mother, and her mother, and many generations of women before her, all had a pet name for the little man with the big cock.My mother's phone call had not. I took a seat and began perusing a car magazine. Within minutes a petite Afro Carib nurse had seated herself beside me. She crossed her slim legs and balanced a clip-board on one knee. "Hi, I'm Mandy. So you'd like to donate?" Er, yes please." Today?" Er, why not? Yes, today, if that's OK," I stammered."Sure. We're not terribly busy at the moment. I've just got to take a few details, if you don't mind? Address, next of kin, that sort of stuff." Fire away."The box-ticking exercise took under 10.