I see that a curvy blonde is reading a book on the seat to the right. I watch her lick her finger to turn the page in her book and wish I could lick h...er. I suddenly scream out in shock as the petite girl next to me takes my cock into her mouth. I quickly cough to cover up my loud expletive and glance around to see if anybody took any notice. The blonde in front was looking straight at me. Shit! Blondie winks at me and then traces her lips with her tongue seductively. She puts her book on the. "It's time for you to masturbate" she whispered. I was grateful that she hadn't noticed my five second wank earlier on. She pulled out a towel I always used to come into. She called it my cumforter. At her gentle urging I began to rub my cock, aware of the humiliating cocktail of cum I had inadvertently used as lube. It made a slurping noise as my hand became a blur - there was no point prolonging the shame, or denying the pleasure. I quickly spurted over my hand and onto the cumforter, a. It was so fucking hot for me. After a few motions, I had to take a lead and I grabbed her by her waist, bent my knees and starting pumping her from the bottom. Her moans were loud and my pumping was hard making sounds every time I thumped on her body. The motions got fast and slow and we were consumed in the fucking for some minutes now.She was riding the bull like a pro. And then she stopped with her hands firmly placed on my chest. Whenever I see her looking at me this way, I knew something. "You know, Trace, that's a tough question," I began, struggling to find a valid reason. "With what Val and I went through, we grew a lot closer than any other normal brother and sister." I sat up to look at her. "Val and I had a special relationship even before we lost our parents. It wasn't sexual - at least not then, anyway - but I always looked at her as the type of woman that I would want to be with for the rest of my life. She...made life worth living, I guess, after mom and dad died. It.