My mother is getting fucked by my grandpa in my room…They forgot I was in the washroom…They both weren’t nude…She just lifted her sari and he ...ust took his dick from his dhoti slowly fucking her….She was moaning with pleasure and asking him not to cumm in her as she was not on pill…The best shock I got when I happened to see my friends mom running towards them in hurry and throwing her heels, removing her panty lifting her sari and getting fucked after my mom…Now my mom is sucking her. We both went to sleep that night without any questions.Later the next week my friend john asked if I wanted to come over and swim at his dad's place and I asked if Zach could join me. He said sure and we spent the day over at John's house swimming, shooting hoops, and just doing teenager things. So it came down to whether or not we would stay the night. We all agreed we should and quickly called our parents who also agreed that a sleepover sounds alright. Well there was only one bed so it was. He picked up the rope, ball gag and Sybian with his free hand, and carried her out to the deck, where he had already apparently put some cushions down. He dropped the accouterments on the cushion and gracefully placed her on the Sybian, spreading her legs so she was straddling it. She cooed. He then expertly looped the rope thru the lashes on her wrists and over a gaff hanging from the ceiling and pulled it so tightly that it appeared to have taken most of her one hundred thirty pounds off. My body shuddered as my climax reached its peak and began to subside. She swallowed everything she could get, then popped the head of my cock out of her mouth, sucking hard as she did, leaving it clean and shiny. My body went limp from ecstasy, too drained to put my dick away I just let it stick out of my shorts. My sister jumped to her feet and looked at me. “Fine…” She said, seeing I had no energy, “you can rest, but you’re going down on me later!” and she walked out of the living room… she.