My sister was almost having her monthly and was totally P.M.S. so she was not interested in any type of s**. She felt crummy and would not even let me use her mouth to c** in let alone a b*******. She did decide to help me by talking dirty while she watched me m********* and c** on her t***. I was making it last. She had a really filthy mind and was telling me she wanted me to f*** her in the a** and in her tight wet p**** when her phone played Cindy Laupers “Girls just wanna have fun.” The ringtone I recognized as Samantha’s. A good friend and lovely f*** buddy of ours. She was my sisters friend when we seduced her into our s** life. She wasn’t coming over, she was here coming up the drive as a surprise. I met her at the back sliding glass naked. After a few words of greeting Sue asked her if she would take care of her h**** brothers c*** since she didn’t feel good. She watched us have s** and f*** for almost an hour as she coached us on. “S*** that big c***! F*** that little p****! Harder! Yea lick her, s*** on her p****.” Things like that. I came four times inside her as she was like one huge rolling o***** without end. We made drinks and rested.