using my niece as an anal cum dumpster all weekend

would use my teen niece like this whenever she stayed at my house! her parents travel a lot and since i wfh, i am available to "watch" her lol. the second she walks through my door, she pleads with my to not hurt her. yet i alwys do. for the next week, she remains naked, and on a leash. if my cock ever gets hard, i lube my dick, push her in whatever position i feel like seeing her tight teen body in, and ram my 8" dick up her ass as she sobs and begs me to stop.