His prick was massively hard in my hand. The engorged veins stood out under the skin. The slit opened at the top of his swollen red knob. His nuts tig...tened in my other hand. Sir rested his hands on my shoulders. He looked down, watched my soapy hands massage and caress his prick. It did not take long. I felt the muscle in the underside of his shaft begin to throb. His cock seemed to enlarge. He groaned. Copious white gobs of spunk jetted out of his cock and sprayed over my body. His grip. We went back side of the water tank ,which is huge and can cover us from anyone catching us. I am very much sure that I am going to fuck my sister some day but I did not expect it to be today. I was holding her against the wall ,I was pressing her hard against the wall ,my hips are continuously pumping her covered vagina .she was biting me on my neck and giving some sexy sounds which are making me excited .I moved my hands to her breasts and pressing them with all my energy she was crying in. I opened the door and saw her in black skin fit shirt and tights. She was looking dam hot and her cleavage is visible from the deep neck top which she wore. She gave me a sexy smile and asked that can I help her in her studies a little bit. I agreed instantly and took her in the drawing room. She said that she is studying Medical (male sexual organs) but as she never seen any male sexual organ so she cant focus on her course and unable to study properly. She is blushing when she said this to. We didn't quite make it as far as the windows. As soon as we entered and I closed the door, she was in my arms. She kissed me with a sudden passion. I eagerly returned her kiss and we were consumed with excitement. I stripped off her sweater and black lace bra. Her firm breasts felt soft and warm as I worked my hands over them. Her nipples responded quickly to my touch. I could feel her getting warmer and flushed. I brought my lips down, kissing her large brown areolas. My tongue twirled around.