Hi I’m a 30 year old male and I traveled to my parents two bedroom condo for Christmas. My 25 year old sister also did. Everything went great and then at bed time our mother said that me and my sis would have to share the double bed in the spare room. My sis looked at me kinda funny and I looked at her and noticed how good looking and sexy she was. I undressed and got in bed with just my underwear on while my sis took a shower. I was watching TV when she came into the room wrapped in a towel and crawled in bed. When she was covered she took off the towel and tossed it on the floor. I felt funny knowing she was nude just inches from me. Then she asked me “Are you naked too”? I said no and asked “Why”? That’s when she said, “I want you to fuck me”! I took off my underwear and got on top of her. She kicked the blankets off us and guided me into her hot wet hole. She must have been thinking about this as she was so wet. The more I pumped the louder her moans got till she screamed “I’m cumming”. It was fast but it was soooo naughty it was wow!!!!!!!!!Later we did it 3 more times. And once mom opened the door and saw what we where doing and said, “You two have fun but keep the noise down”.