I noticed my sis grow and so did her boobs. I saw her naked at various ages and knew her body really well. I used to sleep next to her and touch boobs and sometimes used to try to put my dick inside her panties, but I was scared that my mom would find out. Soon I realized my sister used to wear very less clothes like only her sports bra in her house and shorts. She used to not wear panties in the house. My local friends who stayed nearby often came to my house and were friendly. Later, I realized that they came to see my sister roaming around the house in very less clothes. These friends were elder to me and had experience with other girls.
We lived in a 2-room house, so my sister used to often hangout with them. They used to stare at her and pass comments. Later they grew in confidence and passed comments and wishtled my sister and my mom too. I felt irritated but then started feeling hot and got dreams how my friends would act with my sister. I gave them full freedom with my sister. They touched her, whenever they would got chance. Often showed her their dicks and even tried to kiss her. At first my sister would ignore them, but later, she too liked it. They would take my sis out to room and try to seduce her. I asked them boldly if they liked her. One of them said that he would like to fuck her too. My mom used to date guys and was really chilled with my friends and never took their comments in bad way. She would laugh when they appreciated her ass and figure.
Things at my house were getting hot everyday. My friends would try to get on my sis. I jacked off many times when they told me what they felt about her. One day, my friends decided to go for a beach picnic outside the city limits. They borrowed a car. I sat in front with my friend who was driving. Behind my mom and two friends sat with my sis on their lap. She had worn a skirt like my mom with a tank top. We reached the place. It was a secluded place, almost nobody around.
We got off the car, everyone was tempted to go in the water, but my friends first wanted to see ladies undress, they took their clothes and stood in their underwear with huge bulges waiting to expand even more. My sis took her top off. She was wearing white bra type bikini and removed her shorts a black panty welcomed hard-on to my friends. My mom was feeling embarrassed, but she too removed her clothes off, she had worn a dark green bra and a pink panty. They both tried to cover their seminude state, but the eyes of my friends ran fast over their body. Without a word everyone entered water. After sometime, friends got an idea dat we should remove our clothes and swim. I quickly protested as it would make me feel embarrassed to see my mom and sis naked in front of others, but nobody bothered to hear me, instead they tried to convince my mom, my mom was feeling nervous. She felt it wasn’t a bad idea since nobody is around but was feeling shy. My friends persuaded her. She finally gave up and pulled her bra down. In flash, her brown nipples along with her huge boobs were seen. They just stared at her, others to removed their clothes. My sis removed her panties first and then shyly removed her bra and tried to cover her nipples. I was the last once to do and everyone gave me their clothes to keep it back at the shore.
My mom and sis were completely naked in front of my friends. They too with their big dark dicks tried to cum near them. One of them caught my sis hand and made her catch his dick while he rubbed her boobs. I was seeing this from a distance and could make out what was happening. Other guy came near my mom and offered his dick. She resisted him first, but then she put her mouth around it slowly. She swallowed his dick inside her mouth, while my sis was made to stand up as another guy started licking cunt. I was feeling very hot but helpless as I saw my poor mom suck his dick.