"So the green-dressed cutie didn't show up after all, did she?" I asked him not very tactfully, trying to figure out why he was smiling. As he digest...d my question I watched his face go trough a sequence of emotions: surprise, thoughtfulness and finally eureka moment, drifting smoothly into a mischievous smile. He looked at me grinning without a word, and slowly, very, very slowly I started understanding what this is all about; he wasn't waiting here for her, that note was intended for me in. Lily’s mouth dropped open, but she quickly recovered, and just grinned at me. Turns out, she stayed with us one summer years earlier, and I jerked off in her panties almost every day, and she had figured it out. After a few seconds, she spoke, just saying “that looks good, I’ll be right back” and down the hall she went. A minute later she returned with her mother, both in just panties and bras. Seeing Lily like this almost made me cum right there, but somehow I didn’t. They walked to. As she rocked and swayed her hand inside of Paul's shorts went from a grip to jerking motion. Paul groaned in pleasure in Mia's ear now rubbing her pussy. he asked again. 'Lemme undo ya pants, baby.' Mia complied and lifted out her seat. Paul turned Mia to face him and he undid her button, unzipped and slowly pulled down her skin tight grey jeggings. 'Yeah, there we go... lemme take these pussy hammocks off too....' After he pulled off Mia's thong Paul chuckled at Mia's full and puffy lips.. I guessed that this was the “spunk” or “jizz” that the boys at school who I knew masturbated talked about. I though of asking one of them to show me how to wank but I didn’t have the courage. I’d discovered that playing with my hard up penis was exquisite and spent ages in bed at night just lightly stroking my erect cock. One summer night I was sitting naked in my bed. Being naked felt erotic and exciting. My penis was up rock hard and I was fingering my shaft and my balls.Somehow, quite.