Beach Panties

It was my turn to watch out blankets as the whole group went out to the beach. I had my whole family with me, and my daughter's friend's families tagged along also. I opted to stay back and watch all their stuff while they headed to the shoreline to play in the water.

I was going to re-apply my sunscreen when I couldn't find it. I called over my step-daughter with a wave and she sprinted over. I had to sit back down after I had witnessed her breasts bounce as she jogged back.

"Who had the sunscreen last?"

"I gave it to Lauren, check her bag", she replied in a hurry before leaving me in a sand storm.

My cock twitched as I saw her ass cheeks eat up the small thong bikini that I had cum in earlier today.

I found my sunscreen in her small backpack, but I noticed something else bundled in the bottom. I slowly pulled out a patterned thong. It was the PINK brand, similar to those my step daughter loves. I unwrapped it to see a creamy mess on the crotch. Double checking they were far from sight, I took a deep whiff of sweet Lauren's pussy cream. Her sweat had soaked inside and was trapped. I gave it a quick lick and almost passed out. I sat back in my chair and slid my hand inside my trunks. I began rubbing one out while inhaling her scent and cleaning her panties for her. I watched as she sprinted across the water with high knees to go faster. I watched her blue bikini disappear between her ass cheeks as I tasted the soft and thin fabric that sunk between those young cheeks. I wrapped my cock with the soaked thong and began to cum. I unloaded into the small panty until my hand was soaked and sticky. The entire thong was damp and covered in cum. I re-opened my eyes to see Lauren jogging towards this was.

I panicked, her bag was too far away to replace the panties so I just left it wrapped around my cock. The cum helped it stay there.

"David, can you help me with some sunscreen on my back? I think I'm burning back there", I sat in awe as she turned around, her soft tanned skin reflected light, her ass was a foot away, and her thong was wrapped around my hardening cock. She handed my the sunscreen. I squeezed a generous amount into my cum covered palms. I spread the sunscreen across her soft back, making sure to get underneath the waist band and the bikini strap.
"Thanks David!", and she sprinted back to join her friends.

I snuck the soiled thong back into her bag and went back to my business. I almost came in my pants later when I was watching her climb into the car and a gust of wind passed by. The small thong was wedged deep between her legs, her soaked pussy lips clearly outlined by the damp panties.