My gorgeous sister stood nude before me. My cock reacted quickly and was soon hard as stone once again. Seeing my cock hardening before her eyes, she ...miled. "I want to show you how much I appreciate what you've done for me. " as she dropped to her knees and moved between my legs. As if I was dreaming a dream I had a million times, I watched my sexy younger sister's small soft hand push my hand aside and encircle my thick shaft. She softly and slowly stroked the length of my shaft, examining. I started playing with her pussy and her curvy ass lubricating her nice tight rosebud with her own cunt juice. Mona moaned and cooed as I fingered her pussy and her tiny asshole simultaneously. I spat on this tiny hole and smeared my saliva around it.I then nestled my dick against the entrance of her rectum and pushed in. I could feel my cockhead struggle to stretch her resistant anal muscles. Mona relaxed a bit and moaned loud as my cock finally filled her very tight anus.She asked me to go. Once again I turned to the internet to help solve my problem. This time, I joined a pretty well known swinging website and reached out to countless couples who might be interested in a threesome. As always, it was difficult to find a match. I had some great conversations but nothing materialized. It was getting to be very frustrating.Finally, on a hot summer afternoon, a couple sent me a phone number, which is always a promising sign, and we began to text back and forth. The two of them. Instead of the sweats or jeans she usually wore that morning she left the house in a short skirt, low cut blouse and with no bra. She wore a sweatshirt over the blouse and wore tennis shoes, but carried a pair of "fuck me" pumps in a bag. She drove the kids to their dance lessons and dropped them off. Mellisa's mother would pick them up when she picked up Mellisa and drop them off for their swimming lessons. She would finish her shopping and then pick up her two and Mellisa and drop Mellisa off.