I feared that SIS may not wake up due to cold air so again I put chadar on her body, now she was lying on my thigh, facing towards me under the cover of a chadar( cloth sheet) .
I kept sitting in this position for about 5 minutes , and suddenly SIS scratched her cheek in her sleep and her put her hand in my lap . She was in deep sleep and didn’t know of it, but now her hand was lying just about 2 inches from my lund.
I could not see it , but could feel it. After about a minute there was again some movement in the chadar , and she again scratched her cheek and now when again she put her hand in my lap , it was resting straight on my lund. My cock was under my underwear and also my lungi, but to my horror, it felt her soft hand on it and started raising its head. I was horrified as it started gaining its length and my brain started pumping blood in it and it started getting hard.
I feared a lot that as SIS had put her hand on my cock in her sleep but if she wakes up and find me hard, it will be an embarrassing situation for me.
I started thinking about other things to detract my mind from this so that then my cock may again go soft. But as hard as I was trying to keep my mind to other things , it again and again came back to the movement under my underwear and it kept gaining its rigidness and tightness with every passing second.
Sis’s hand had some movement in sleep and now her hand was squarely on my cock and I could feel her fingers on it. I pushed the side of chadar to one side to see under it and found that Sis’s eyes were closed and breathing rhythmically , but her hand was fully on my cock as if she was holding it. She was perhaps in deep sleep.
My cock started gaining its size and tightness, and within no time and to my horror, it started touching the cheeks of Sis. I was startled and there was nothing I could do anything for it. After about one minute SIS moved a bit in her sleep and now my cock was not touching her cheeks , but was quite near to her lips. In all her squirming and twisting in her sleep, the side of my lungi had moved to one side and my cock was wrapped only in my V shape underwear. Sis’s hand was squarely on my cock now and in her sleep she had almost wrapped her fingers around it and in a way now she was holding my lund( though in underwear) in her fist. Now lust was overriding my mind and thinking and I was enjoying the movement a lot.
In my lust I unknowingly pushed my pelvis toward her mouth and my cock started touching her lips. It was the most erotic moment of my life as I had never seen my SIS as a sex object and I had never seen her even half nude. And now my cock was knocking on her lips. I had not even dreamt of such thing in my dreams even. I had pushed the chadar to one side a bit ,enough for me to see what is going on under it. The light in the train compartment was off, but the compartment was illuminated enough for me to see the most erotic movement of my life, below the chadar.
I could see my fully erect cock which was in Sis’s fist and her fingers wrapped squarely around it , and under only thin cloth of underwear , it was touching her lips. My lust knew no bounds, I thrust it forward and mushroom shaped head of my lundtried to gain entry in my Sis’ mouth. But it was not possible as my cock is already very thick and now it had grown so thick that even I had also never seen it so big ever and also it was wrapped under underwear.