One day I needed to borrow my brother's camera, so I went up to his room when he wasn't home and grabbed it. Before I started using it, I started going through the pictures to see what was on it. I was flipping through it and I saw something that looked like my room and it was a video. I played it and kept watching it to see what was going on, when all of a sudden I saw myself walk into my room wearing my bathrobe. He must have snuck in and started it when I was taking a shower. I was shocked when it showed me sit down on my bed, legs dangling over the edge and I opened up my robe and started rubbing myself.
I was pissed! My own brother was spying on me when I fingered myself. Who knows how many times he's done this before I actually masturbated. I kept watching myself dig into my pussy with both hands and was about to call him and yell at him, but the more I watched the hornier I got seeing myself do it. Watching myself wiggle around on my bed and cumming started a faucet between my legs. I needed to masturbate, but I wanted to watch myself when I did it.
I went back up to my room, but I wanted to do it just like in the video, so I stripped down and got into my robe and got in bed. I started watching it again and rubbed myself with the other hand. I don't know what it was, but watching myself was a huge turn on and I came harder than ever before. The bottoms of my feet tingled, I had butterflies in my tummy and my eyes watered.
After I got back up and got dressed, I deleted the video and put his camera back where I found it. For a couple days after, he seemed really weird around me, so I know he saw it gone and that I had to be the one to delete it. I'm pretty sure he won't do it again.