I [22] and brother [18] tease each other
We were still living with our parents in an apartment. We were coming home after playing soccer. I can't recall how but the topic of foreskin came up and while we were in the elevator I dared him to show me his cock and foreskin. I told him there were no cameras and not to be a pussy. He did and quickly put it away before the elevator door opened. Our heart rates were through the roof. We entered the apartment. Only our mom was home. She was cleaning. We lived in a 1 bedroom apartment. Since she was cleaning the living room, my brother and I went to watch TV in their bedroom. We were horny and got under the covers. While watching TV we begun to jerk each other off. It was so hot we came in each other's hands in seconds. We were so into it that we did not notice our mom getting close. She walked in and asked what we were doing. We said we were cold. There was a pause and she dropped it. I doubt she believed us. We did not have money so my brother and I slept in bunk beds in the kitchen. That night my brother and I could not sleep. In the middle of the night we heard our parents fucking. We giggled and joked about it. We complained that it was so rude that they were the only ones. Then there was a pause. I climbed down into his bunk. I pulled my cock out. He looked at it for a moment then went right for it and started sucking. It was so hot and I came in his mouth quickly. He looked up at me and opened his mouth. It was full of cum. I will never forget that image. It was so unbelievably hot. I pulled his pants down, turn him over and started eating his ass. He was moaning softly. I started tongue fucking his ass and he would push back on my face. The whole time we could hear our mom occasionally moaning. Then I heard him say "fuck me like mom is getting fucked. " I stood behind him, spit on my cock and asked him if he was ready to be my bitch. He looked back at me and said that this has been his fantasy for a long time. I slowly pushed in. He was so tight. It was hard to get in but eventually my cock head slid in. We both moaned. I slowly started to pump in and out. It was not long until I could move faster. At one moment I almost pulled all the way out and slowly pushed all the way in for the first time. I had to pull out because he got dry. Good thing we were in the kitchen. I cleaned my cock and grabbed olive oil. When I went back he was on his back and pulling his legs back. We could hear my mom more and their bed making noises. We smiled and he said let's show them how it's done. I used the olive oil as lube on my cock and his hole. I climbed on top of him and pinned him down. I looked him right in the eyes and said that he was my little sister from now on. He said that his hole was mine. I slid in so easily. He moaned a little too loud and I covered his mouth. I froze for a few moments until I heard our parent's bed creaking. Then with my hand still over his mouth I started pumping. I could hear his muffled moans and could see his eyes rolling back. That was too much for me. I told him I was about to cum. He pulled my hand off his mouth and told me to fill up his pussy. He told me it belongs to me. I came the hardest I had ever. When I eventually pulled out I looked at his gapping hole. My cum leaking out of it. I told him it looked so good and that it will never be the same again. He reached down with both hands and pulled it more open. I never want to go back. I am your little sister slut. We went to bed but could not sleep. It kept playing over in our heads. At breakfast when my parents stepped away he told me he still had my cum inside him. After that night we would fuck non stop whenever we got the chance. I am now married. On occasions when we go on vacation as a family we always find reasons to sneak away and be alone. I love my little sister.