Recently I stayed with my brother and his wife for a few days and I was in the room next to them. I found out they had very thin walls when the first night I could hear them fucking almost as clear as if we were in the same room together. I was laying in bed almost asleep when they began to go at it in the next room and I was soon wide awake and listening to their fairly loud sexual vocalizations. I was turned on in pretty short order and could not help myself from masturbating as I listened in.
I’d walked in on my brother masturbating once when we were teenagers and he saw me, but I just turned around and left and pretended I never saw anything, but I’d thought of that moment many times over the years. Sometimes I’d even masturbated as I thought of him with his cock in his hand stroking himself and I walked in. I saw how big it was and he sounded so horny and was breathing so hard. I remembered masturbating that very night I was so aroused by it, but it was never spoken of.
Now I heard him making sexy noises again and I couldn’t stop myself from reaching under the covers and rubbing myself wondering if he was good in bed and how it might feel to have his cock in my pussy. I knew I was a bad person for thinking such things, but I couldn’t stop myself. I was so horny as he fucked his wife and I heard every moan, every gasp of pleasure. I came on my hand and then flipped over on my knees and was rubbing my clit as it stuck out in that position, rubbing it hard and fast again as I made myself cum a second time and they finally finished.