[thieph]

Quite some time ago in our early 20's, the parents of the girl I was dating at the time won a week away on a popular east coast island destination. This was long before Airbnb, the home was donated to a fundraiser at the medical school her dad worked at, and as such was quite literally the family's vacation home. Plenty of family photos around and other comforts as well. My gf and I wound up in one of the daughter's rooms, which was empty of any personal belongings, or so I thought, as we unpacked, I found a black nylon thong in one of the dresser drawers.

After a few days, we were heading out to fancy-ish dinner as a group and my gf was going to wear a knee length summer dress and wedge heels, nothing too special but still sexy. On a whim, I asked her to wear the thong we found the other day and gave her a dirty smile. To my surprise, she agreed. I could embellish the story, but nothing noteworthy happened while we were out.

Once we got back to our room, I came up behind my gf and began kissing her neck. She loved this and would lean back into me and grind into my crotch. As she did this, my hand wrapped around her waist and under her skirt in search of her crotch to begin teasing her. As I found my target, I immediately noticed the heat and the wetness, so much so I stopped kissing her long enough for her to turn around and face me. This time it was her giving me the dirty smile. She admitted that she was very turned on wearing the strangers thong.

I laid her back on the bed, lifter her legs straight up, and slid my cock between her thighs with the underside gliding along the slick nylon material covering her moist pussy. I began pumping and only lasted a few thrust before I finished on the borrowed panties, shaking violently and causing my gf to have an orgasm of her own.