Help me find this story please

Can someone help me please I'm looking for a brother sister penectomy story I saw but I can't find it again. It had like two main scenes the first was like the sister caught the brother in her panty drawer and made him sit in the corner and he wasn't supposed to look be hind him but he did so he busted his balls castating one of them then the nest she gets a friend and the give him one last sex but they ruin his last orgasm and cut his dick with a piano wire ... so any boy know what this is ?