(The following is a true story)
I couldn't believe how lucky I was. I had a regular show in the convenience of my own room. I was bursting at the seams to tell someone, and it wasn't long before I invited my best friend over for the weekend. We had fooled around a bit over the years, jerking each other off while talking about girlfriends, etc. Nothing heavy, no anal, no kissing, just another hand (occasionally a mouth) on our cocks other then our own.
We were hanging out in my room, sneaking a screwdrivers made from vodka stolen from his dads liquor cabinet when I told him about the peephole. He couldn't believe it. We had always talked about how we were attracted to our own and especially each others mothers, and now we had it right in front us. I lifted a corner of the poster covering the hole and showed him, explaining how we had to wait in darkness so they wouldn't catch us.
Eventually, my parents made it to their bedroom and turned on the light, meanwhile, on the other side of the wall, Brian was quietly unzipping his pants. I laid on the bed browsing some porn I had 'borrowed' from my dad, occasionally glancing at Brian, watching his reactions, his face glued to the wall and hand slowly stroking his hardening cock. From what he told me later, all my mom did was undress and change into a nightshirt. He did get to see her topless, but she only stripped to her panties.
He laid down next to me on the bed and placed his hand on my dick. I reached out and wrapped my fist around his much thicker and larger cock. We jerked each other off, talking about my mother, her breasts and hairy pussy and I came all over my stomach. He leaned to the side and added to my cum. It was something we had done before and we both liked it. I liked the feeling of a lot of cum pooling on my stomach.
Needless to say, he became a regular visitor. Often spending whole weekends in attempts to view glimpses of my mom naked, in due time he was finally rewarded with a sex act. He told me my dad had come in to the room wearing an undershirt and his tighty-whities, his bulge quite visible through the material. Even though Brian's cock was large (just under 8") he was impressed with the size of my fathers manhood. He stripped of his shirt and laid on the bed, caressing his prick through the material. Then my mother walked in. She was wearing a white loose button-down blouse open wide almost half way down her stomach (no bra) and a black skirt with tan stockings. She came into the room, leaned over the dresser and moved the blouse aside to reveal her left breast. She fondled it, teasing my dad (and, unknowingly, Brian too), bringing it to her lips to lick the nipple. Her right hand stroked her body stopping to rub her pussy through the skirt and to pinch her right nipple through the material of the shirt.
Finally she took the shirt off, rubbing her hands up and down her chest, lightly pinching her hard nipples. She turned around, bent over the dresser, legs together, her hands running up the back of her thighs, over her stockings and pulling up her skirt to expose her naked pussy. She looked back at my father over her shoulder and smiled, spreading her ass cheeks as wide as she could. She began lightly stroking her pussy lips with her finger, eventually bringing the hand to her mouth to wet it, then inserting deep into her pussy. She did this for a bit as my dad stripped off his underwear and masturbated his cock, his eyes not leaving her body for a second.