I was walking home one night from a buddy's place and I walked past the house of a hottie. I knew she was a hottie cuz I had been at her house a week earlier hanging out with her sister, who was about my age. I had known Heather for about three years, and she was in the same grade as me. Then there was her younger sister Kerrie. She was 15 and smokin hot. Well, as I passed their house, I saw a light go on in the basement. Curiosity got the best of me and I crept up to the window.
Looking inside I saw Kerrie in a state of undress. She was slowly taking off each article of clothing like she knew I was there. When she got to her bra, she removed it and slowly stroked her nipples. They instantly turned three times bigger. At this point I had my cock out and was stroking it hard and fast. She then slid her hand inside her panties and started rubbing herself. I was so turned on I blew my load right there. I continued watching her as she put a t shirt on and removed her panties. She slipped under her sheets and I thought she was going to sleep, but instead she pulled out a porno mag!!! She flipped the pages of the mag and I could see her hand moving under the blanket. She stopped on a page with a hot guy holding his hard dick, and she lost all control and I watched her cum under the blanket, as I blew my load for a second time. She then fell asleep, and our night was done. I watched her several more times in the weeks following, and I also watched her sister. Both loved to get off and I swear they knew I was there.
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