I knew they didn’t obsess over me or anything weird because I am their sister.My brothers like boobs and butts like most guys. I remember once my mo... hung paintings of naked older women in the hallway. She considered them valuable fine art, but she bought them at a cheap yard sale. Barry and Adam called the pictures “Old Ladies Butt,” but they still stared at them in awe. I wasn’t surprised at all that my brothers would like to look at my boobs.I was shocked to discover that my mom was willing. I stretched a bit, and then his head was past my sphincter. Still stretched, he pushed inch after inch into my hot hole. I wanted all of him, and soon his balls were slapping against my ass, and my cock was ready to shoot. I felt him tense up, and fire his first blast of hot cum into me, and then another, and another before his cock started to go soft. I shot all over myself, and someone wiped it up and dripped it into my mouth then replaced it with the load from their cock. It was so hot.I. 'Well the fucking felt fabulous but I wanted to cum so I started playing with my cock and it didn't take me very long to jack off a big load all over my stomach and the shirt that I had tried to pull up high enough so that it wouldn't get hit. Oh well. He began fucking me with long deep strokes and I decided to help him finish off strong by wrapping my thumb and forefinger around his cock to add a little more sensation for him which is a trick that I learned from a girlfriend. She used to do. Again, it did not move at all and I assumed that it must be fastened to the floor.This was getting very strange indeed.She ignored my clear attempt to move and instead start asking me questions.She asked about my diet and exercise. She asked about when I last had my eyes tested. She asked about family history of heart disease and diabetes. All pretty standard.Then she said, “Oh, I guess I should be writing this down and with a little smile”, she twisted round and lifted a pencil and notebook.