In high school at a legal age, I had moved my bedroom to our basement game room. It was kind of a rite of passage for the boys in my large family, me being the youngest. I had a part time job in a retail establishment that had a very discreet selection of adult magazines.
one weekday evening, it was fairly early but I was really horny. I went down to the game room and was lying on the sleeper sofa, jeans down around my knees, stroking my dick while looking at a couples pictorial in Penthouse. The door opened and I thought it was my dad coming down to replenish his beer supply, so I pulled the blanket up, expecting this to be just a minor interruption to my self pleasuring, to which he would likely have been completely oblivious to my presence in the first place.
it wasn’t my dad, it was my sister, a few years older than me. My mom had sent her down to see what I was up to. So she came bounding down the steps and into the game room. So, there I was on my back, pants around my ankles, a porn magazine on my chest, with a blanket covering over all of this as I tried to hide the tent my teenage boner was making. She came over to the sofa bed and I pretended to be asleep. She jumped on the bed and started getting in my face. She had a knowing look on her face and she was having a field day tormenting me, but she never did pull away my blanket..... I’m pretty sure she knew what was going on under the blanket....
