*all parties mentioned in this story are adults*
I was home from college for the summer of my senior year and had just spent the past week helping my family with my youngest sister's graduation celebration. Chrissy had just turned eighteen and was now planning to attend the same college that I was in the fall.
Her graduation party was held in our large backyard that had plenty of room for all kinds of games, activities and our large in ground pool. Chrissy had always kept her friend circle fairly small for as popular as she was, but that circle of friends included some of the hottest 18-year-old girls in bikinis that I had seen in a long time, including the girls at college.
That night when everyone had gone and we had gotten everything cleaned up, I headed to my bedroom for some alone time and while laying there in bed, I could not help but think about Chrissy's friends and those tight bikinis showing off their tight asses and the material of said bikinis molding against their pussies and showing off some hot camel toes. I even thought about Chrissy.
She may be my sister, but she has an incredible body on her and to make matters worse for me, she is a very touchy-feely sister, always hanging on to me and hugging me, whenever I am around her. I pretend like I get annoyed but she is just so sweet and so hot, I let her get away with anything.
As I picture Chrissy and her friends, with their nipples hard from the cool water, pressing hard against their tops, my cock gets rock hard and throbbing. I pulled down my shorts and began slowly stroking my firm flesh, watching the precum form at my little hole. Now I do not like to brag, but I am above average down there and several girls that I have been with can testify to that as they have had many sore mornings after we had fun.
As I move my hand slowly up and down my long thick cock, just getting into a nice rhythm, Chrissy comes barging into my room and before I can even react, she jumped on my bed. I froze in mid stroke! She froze with her mouth open and half smile as she looked directly at my cock!
"Oh my God, Andrew! Were you jerking off? Wow, holy shit, your cock..... it's HUGE!"
Before I could react, she had her hand on it, pushing my hand out of the way as she wrapped her fingers partially around my thickness! She then moved it around while examining every square inch with wide eyes and a shit eating grin.
"Wow, it's awesome, bro.... and it feels so hard but the skin is like silk.. and it's the biggest cock I have ever seen!"
As I said, I always seem to let Chrissy do whatever she wanted to me and this was no different, but I had to at least say something to her.
"Chrissy, you have to quiet down. What if someone hears you and really? Should you be feeling my cock like that?"
