We had dated a few times in high school and it wasn't unusual to see brothers and sisters together in our small hometown, especially the farm kids, at... homecoming and prom and other school events, but I had made the mistake of trying to kiss her and she'd rejected me and barely spoke to me for about two years. She seemed to have forgiven me and I said we could have lunch and go to a matinee, a new movie that would become a classic was at the theater in campus town, and she said yes. Many years. If you see anyone you sort of like, let me know. I said, hopefully. How about you? She asked. I came here for you. I explained. To watch you like I said I would and help you. No, I mean do you see anyone you like. I see so many hot girls. I said smiling. What about the blonde by the table over there, she said pointing with her eyes. I looked over and analyzed her, she was about 511 and pale. She probably had B cup breasts but they didnt look very large on her long frame. Her ass was almost. But i forgot to lock the bathroom door properly and i removed all my clothes and started to do it.As i was doing it suddenly mom opened the door because as the door was not locked properly she thought no one was in there.And she saw me jerking off and i didnt know what to do.I just tried to cover my erect cock with my hands.My mom was visibly shocked at what she had just seen.Mom was disappointed at me she was telling me how this is not right and stuff but i noticed that she couldnt stop. As I pulled her head up a low guttural moan escaped her lips. Using my hand I drew back and slapped her ass. "Again" I heard from my teacher. I drew my hand back and again slapped her ass cheek. "Oh God yesss..., again" I slapped her ass a third time in the same spot while I continued to slide my cock back and forth in the cleft of her pussy.I slid back farther and inserted my cock into her dripping cunt while my hand swatted down onto her now red ass. "Oh Godddd..." Mrs. Graph cried out as she.