While coming down some one entering into hall in nude, to my surprise, it’s my sis. Oh god! In shock came down she did not see me. I think she don�...t know that i came from college. Actually daily i reached at 8pm. But today???She was walking in hall with nude. Dancing, jumping, and showing her nakedness. Oh man! She has nice boobs and ass chicks. She has perfect curves. I don’t know her size surely. But looking like porn star structure. With stunning mind I am seeing from corner of the door what. Then she pulled Sam to her mouth and sucked his wet cock covered in both their juices. The boys took turns licking her pussy and getting their cocks sucked and sometimes sucking nipples for the next two hours. She let Sam fuck her cunt one more time and pulled the other boy to her pussy to suck the cum out. Then she told the other boy "Hold that cum in your mouth and pass it to Sam's mouth and let him swallow the mixture. That's it. Spit it in his mouth." As they swapped the cum she was jerking. It took only a few seconds for me to explode a gallon of cum down her throat. I had never felt a woman swallow my cum while I was still halfway down her throat. How she didn’t choke I don’t know but it felt unbelievably intense.As I extracted my cock and she licked the corners of her mouth she murmured mischievously “I told you I like Banana and cream.”She and I showered separately (I suggested showering together but she insisted that she was already late for work) and dressed but just before. . then Thursday came. after school I went to Stacy's house and walked in. There she was in a tight pair of dark jeans showing her great ass a white button down shirt exposing her DD breasts in her black lacy bra. I looked up to see her red hair and blue eyes. I mean for 43 years old she was smoking hot! She asked me to come to the table and we talked and she asked, "If we do this we take it to our grave right?" "Yes." We both stood up and we hugged for while until I looked in her eyes and then.