My First Masturbation Dare

As I said it my last story, I have a brother and 2 sisters. The older of my sisters was away in college when this happened. My other sister and brother were 16 (twins). We were always daring each other to do stupid things. This was the first dare that involved masturbation.

Katie, my sister that still lived at home, had been playing jokes on me and Joe, my brother, that entire week. We were getting sick of it. One day after school, Joe and I got home before Katie because she had volleyball practice. Joe looked at me and said that we needed to get her back for those jokes. I agreed. That's when the dare came.

Joe said,"I dare you to grab one of my condoms, jerk off while wearing it, then put the used condom on Katie's pillow." I smiled at him, knowing he wouldn't refuse a dare, and said, "Okay. I dare you to do the same thing along with me." He said he would.

We grabbed 2 condoms from his drawer and went into her bedroom. We put in a porn video and pushed play. We got hard-ons quickly. I put my condom on first then he did a minute or so later. We were stroking fast so we could see who orgasmed first. With Joe being the more experienced masturbator, he came first. As he was cumming Mom walked in. She said, "What the hell are you two doing?"

We explained. Mom laughed and said,"She's gonna kill you. And don't say I didn't warn you." While she was saying that I came. After we both finished we carefully took the condoms off and put them on Katie's pillow.

She got home about an hour later while Joe and I were watching TV. A few minutes later she screamed. Joe and I ran to her bedroom and asked what the problem was, acting like we didn't know. She threw the condoms at us. She then started chasing us. After she slapped us each a few times she told Mom. Mom said, "It was only payback for the stuff you did to them." Katie stormed off to her room. She apologised a few days later.