Mom let me wear one of her conservative summer dress that covered my breasts and went past my knees in length. I had never been in Maria's neighborhoo... and dad had gone out for an evening meeting so I had to find my way to Maria's. A half hour later I knocked at Maria's back door. It was a real fun party, we sang happy birthday to Maria, played games and records. It was later than I planned on leaving the party. The other girls had rides home, but I didn't so I had to walk. I crossed the. I told him he could fuck me tomorrow if he comes prepared. We both got dressed and jogged our way back. Once in the shower I played with myself till I came. I had a great day later knowing tomorrow will be a nice fuck fest. Next morning, I wore my bright pink g string under my shorts, sports bra and was ready to meet Kevin. Once we made our way to the 'fuck rock' I had Kevin pull my shorts down to reveal to him my sexy ass in thong. He slapped my ass as he admired my naughty panty. I pulled off. Katelyn blushed and then tried to pull the shirt down a little, without much success. Susan laughed, "Don't bother girl, I know my brother likes to look and so do I." Sis gave Katelyn a big wink and we all chuckled."I think I need to go shower." Katelyn looked at me, "are you going to be okay for a bit while I clean up?"I nodded my head and as she started to leave the room, I called after her, "When you are done, I need to discuss something medical with you."A quick look of concern came over. She asked to suck her more and more. Her soft and round boobs were very tasty. Her nipples where big and aroused. After sucking her boobs for sometime I slowly shifted down to her hot pussy. It was shaved and looking really nice. I opened her legs and started sucking her pussy, My tongue was inside her pussy, she was biting her lips and her moans were getting louder and louder. She came in my mouth.Now we changed our position and came in 69. We were sucking each other. It was a great feeling,.