My name is Chris (I've changed the names due to anonymity) I am 18 years old. I'm about 6ft tall, stocky/overweight, dark brown hair and I have a pretty impressive 7.5" penis (not made bigger for the story!!) And so it begins....It is 1:40am on Wednesday 1st June 2011 and I have just been awakened my the sound of moaning in the next room. Silently, I crept out of bed and noticed that my sister's bedroom light was on, shin...