At first mum was moving her backside to meet his thrusts but I saw that she soon gave that up as he started fucking her even more forcefully. In the e...nd, all she could do was grip the carpet hard, her mouth open as she emitted loud "ugggh"s. As she started to approach orgasm, she started getting quite verbal. "Oh yes (uggh) my baby." followed by "Oh (unnngh) it feels so good. I love it up me. You are so big! Fuck me, honey. Fuck it up to your balls. I love your big hard cock!" followed by loud. She jolted each time, not from the pleasure but from the pain felt when their pelvises crashed into each other. She could not help but wish he would hurry up so it could end. She clung onto his shoulders, digging her fingernails into his skin. Her toes curled as her legs remained locked behind him.Finally, with one extremely painful slam, he stopped moving. He buried his cock as deep as he could get it and began to cum. She finally relaxed as well and liquid began to gush out of her cunt around. We last saw them when he got married. So mom was really excited to meet him.As she was new to the place, she asked me to take her. I knew mom was really excited, so I couldn’t say no. It was not that far. We got there with the help of GPS. They lived in an apartment building. I asked mom to call and ask for their flat number. She told me she already knew and wanted to surprise them.It was on the third floor, so we took the lift. After reaching the third floor, we searched for the right flat. I went into my room, stripped off my clothes and laid there naked waiting. It was only maybe ten minutes before my sister appeared in my room, clothes unchanged. “Tell me everything you’ve ever wanted to do to a girl or wanted done to you.” I was silent. “Come on, you’re a 16 year old boy. I know you’ve thought about it.” “I want to fuck a girl and have her suck me,” I said. “Come on I want some real details. Anything you’ve ever thought of.” “I want to fuck a girl’s face, make her gag. I.