Just beyond her, through the window I could see a crowd, five or six people watching. I recognized my neighbor, a cute little Hispanic girl who share... classes with me at the college. Our eyes locked. She smiled with approval. I thought I better stop this, but Karen hadn't noticed and I had been sucked to the brink of climax. There was no telling how long they had watched and we had been doing fine. Besides, my cock was throbbing and I needed to cum. Something was different though; I was. And just then, she squinted her eyes as though she was trying to get another look at my dripping cock head and long veins of hard heat, and I saw an involuntary tongue lick her lips.And so as I sat there trying to hold back my orgasm, holding my cock at the base like an improvised cock ring. I was so naive and inexperienced. I felt the cum start to rise in my balls as I gazed upon my beautiful, blonde stepsister, Shelley calmly affirming her standing position like my hugely hard cock and its. Sucked my ass too.,..we made the 69 position... i sucked her wet warm pussy till my tongue was sorei fingered her ass,,, with my two middle fingers ,,she cried from painnever heard her on that voice,,she never got in pain ,,she pussy was big and i was only 16 in that time ,, with an average dick size ,,and as we know brunet ( black i hate to say it ) are so hot in sex and need large size of dick to please them ..i turned her over and fucked her ,, so hard ,,,she was happy and moaning ,,,i. But she did not react. Usually pressing nipple will give good feeling to a girl and she would react positively, but here it was missing from her.I did one bold thing. The top button of her shirt was unbuttoned and there was sufficient gap. I inserted my hand and gripped her nipple. She raised her head and looked at aunty. Aunty was not looking at us and so the girl resumed writing. There was no further reaction from her. I slowly massaged her nipple but I did not feel it hardening. I rubbed her.