Hey big brother! Can I talk to you about something? I found mom's fuck machine in her closet and now I can't stop thinking about it! I really want to know what it feels like. Can you help me set it up? You do, but once I see how INTENSE it looks ... I ask you to please stay while I try it, just in case it malfunctions or something! You agree, and then watch me squirt for the first time, then cum twice as the fuck machine pounds my tight pussy. After that, I realize that your dick got hard! I feel bad because it's all my fault, and it's not fair that I got to cum but you didn't. I offer to help you cum. You agree, as long as I keep using the fuck machine at the same time. I stroke and suck your cock while the fuck machine pounds me in doggy. It makes me so horny that I beg you to cum on my face. And THAT makes me so horny that I beg you to cum in my pussy. I ride you with your cum still on my face until you creampie your little sister. You're a pervert, big brother, but I kind of like it!