Now I got up and went to her boobs and started sucking her boobs and I placed my hard dick in her hand and she was shocked to touch it as it was her f...irst time and then she gave me a nice hand job I asked her to give blowjob but she refused for it and continued with hand job and meanwhile I was finger fucking her now she was all ready to be fucked and she started to beg me to fuck her But I said to give me blowjob first so now she agreed and gave me a nice blowjob and too my surprise she was so. Mom came out of kitchen and saw me. I just looked my mom. She went to bedroom and shouted my sis silently for not bolting the door.From then every time I wank my cock, I cannot resist my sister from entering into my imagination.I fought with that memory and finally gave up. I started masterubating imagining my sister. Initially, it gave me big pleasure. Gradually it started diminishing. And of course, I wanted more. She totally forgot that moment and acted normally. But I used to watch her. "Sure," Luke said, taking a swig of beer, "If we were playing for money I'd be to sorry for you to have any fun." Ahhh ... you're full of shit."I threw a couple of rounds and gradually lost my hat, necklace, and swim trunks. I stood up and yanked the shorts down. My erection was plainly visible to everyone in the room. Luke, who was still wearing his shirt and one shoe, looked at me."Alright, Greg, here's the bet: You win this hand, you get all of your clothes back, you lose, and whoever wins. Since we couldn’t plan it early, we didn’t get train tickets. So trip was arranged in bus. It was a 4 day trip starting with 13 hours overnight journey. Initially I was not sitting with her. Everyone was having fun with music and dance. Bus stopped at a hotel for dinner. After dinner she had reserved a place for me near her. When I entered the bus, she signaled me to sit with her and I did. The fun continued for some time and people started to sleep one by one. It would have been around.