I'm lying in bed wishing I were anywhere but here. I can hardly believe my dick is limp and useless right now. Just the thought of masturbating cause me to leak pre-cum and there is nothing I can do about it. I rubbed it too much so my mom took me to the Doc who's remedy was to wrap it with instructions to leave it bandaged at least two weeks. I should be out sticking my dick in every willing hot college girl on campus but instead I am here leaking at the thought of it but that soon changed. My step sister came in saying our mom sent her in to do the examination duties on my dick. Apparently my mom is too embarrassed so she figured since my step sister and I are close in age that she would do the deed with better ease. There was an awkward explanation of what she was about to do and then she just went for it. I knew right away I would get a raging boner. My sister is pretty fucking cute and don't think I haven't fantasized about sneaking down the hall in the middle of the night for a little late night cock surprise. Despite the awkward situation she was being a good sport. Sure enough with her removal of the bandage, quick exam and determination that everything looked o.k. to her, I let the boner stand strong for her to maybe help a brother out. She was flattered that her presence was making my dick hard so she went along with it and became quite the sexy seductress. Not that she had to work for my willy as it was all ready for anything she would do to it. She undressed to show me her perky little tits which made me leak even more at the thought of sliding my dick in between those little perfect mounds. With a good strong grip from her petite hands she worked my stiff shaft up and down repeatedly and with good rhythm. She was very determined to work my first cum in weeks from me. She showed me her naked tight body which included a glimpse of her pretty pussy. When she asked for my cum I couldn't hold back and gladly relieved myself of that pent up jizz all over her tits. While my head was still dizzy with relief she reminded me she was there for an exam that got a little out of hand so to speak and had to get back to our mom who was waiting downstairs for the report. I may just be able to make that late night trip to my sister's room now that we've had this little surprise encounter. Starring: Sara Luvv