It's great when either of them sit on my lap. My sister is always either on my lap or my brother's, so if they played with each other I wouldn't be shocked.īoth of them usually just wear underwear and a shirt around the house. They share a room, and they're very close. I wouldn't be surprised if they were playing with each other. Since I'm usually home alone babysitting them all day during the summer, we have plenty of time if I decide to try to do something with them. Usually they just watch until I shoot my cum before leaving. They've caught me jerking-off a few times in the past couple months. Afterwards he asked if it felt good: I told him it did. He just stood there watching as I pumped my fist up-and-down the length of my dick until I shot my cum. It was one of the rare times when I didn't have a pair of their undies wrapped around my dick. I told her that guys get hard when they're turned on and girls get wet, and she was just like "okay" and stared at my crotch for a few minutes then left.Ībout a week after my sister saw me getting out of the shower, my brother caught me jerking in my room. She seemed kinda shocked and asked why my dick was hard. Quite often I see them wearing the ones I've just used and put back in their underwear drawers.Ī little less than a year ago my sister saw me hard when I was getting out of the shower. They've never said anything, but I'm pretty sure they know what I've been doing to/in their underwear. I've used their bathing suits as well: my brother's bathing suits are okay, but my sister's bathing suits are just perfect for it. Don't get me wrong, I cum pretty hard in my sister's panties too. I get so hot picturing his hand wrapped around my dick when I'm using his undies. Since all they wear are their undies and shirts, I can always tell when they're wearing the ones I recently cummed in.įor some reason I seem to shoot more and harder into my brother's undies. It's so hot to cum into their underwear, but what's even hotter is putting them back in the drawer with the clean ones afterwards. My little sister wears pink Disney princess panties, and my brother wears Spiderman undies. I jerk-off into their underwear every day, at least once a day. One day I accidentally grabbed a pair of my brother's undies out of the laundry and it worked just as well. For the first month or so I was just using my sister's. Since Chris was always going on about how great it was so I decided to try it. He told me that had he had found a solution to that problem: he wrapped a pair of his little sister's panties around his dick when he jerked-off. I commented about how the cum I shot made such a mess and how it sucked having to clean it up afterwards. Since it's so hot all summer, if we're not leaving the house we don't bother putting on regular clothes: just undies and shirts.īack when I was like twelve, my buddy Chris and I got to talking about jerking-off. I have a little-brother and little-sister: nine-year-old twins.