It was a summer's evening, July if i not remember bad :-P, i'm heading toward the lunch-room for the dinner, my sister is sitting at the table, and sh... wears a tunic for the house, and i see her from behind, and, given that the backrest of the chair was at half, i can see from behind her, and i see her beautiful ass tight inside that tunic, i do not know what kind and size of panties she had because the tunic was of dark color blue blue-night :-P, but anyway her buttocks they sink for well on. "What? Why? In school?" the teacher demanded."It wasn't my idea," I told him. "Please let go of my arm."He hesitated a minute, then let go.The whole class was chiming in now, until he blared out a commanding, "QUIET!" The class stopped talking immediately, and he turned to me. "Now please explain this, briefly but clearly." I was met at the door of the school by the principal on Monday," I explained, "and ordered to take off my clothes. I was informed I'd have to attend school in the nude this. She wasn’t breathing with nose but with her mouth so her mouth was open and i had the intentions of kissing her lips so i moved my lips closer to her and kissed her on the lips with the least possible force i could apply on her lips with my lips so that she dont get awake. Again i got more courage i dont know from where i got it i started moving my tongue over her lips she did show some reaction and closed her mouth and adjusted a bit and again fell asleep.Due to this movement of her my began. I begin to start to moaning, forgetting to try being quiet. I feel you throw a clean washcloth at me. I stop grinding on you long enough to roll it up and stuff it in my mouth. I feel your hands leave my waist and feel your thumbs slide slowly down my ass and then to the bottom curve of my ass. You spread my cheeks a little and lean forward, watching your cock slip in and out of my wet, pink lips. Your shaft is so slick from my juices. I start moving in a quicker rhythm, finding my spot and now.