an abnormal appendage

I look at quite a lot of porn on my phone, and just when my body decided to squirt, my brother Andrew decided to let himself through my door. After i had calmed down from my ecstasy, i found myself tied down to the bed, limbs widespread, showing my everything to the world. My face went a bright shade of red as i tried to struggle my way out of my binds but to no avail. "YOWCH!!!" i screamed as Andrew stabbed a syringe into my thigh. The medicine is pushed into me and as i go hazy, my last words are "where'd you get the anaesthetic..."

When I woke up, i found myself still on the bed, but now with my hands tied to the ceiling, so i was in a sitting position. I looked down and found what seemed to be a coil of red string between my thighs, leading into my vagina. "Hey! Anyone there?!" I shouted, before realising the state i was in, and desperately failing to cover my bits. My sister walks in with quite a smug look on her face. "What's going on?" i asked. "What's this red string?" "Oh, i'll show you what that red string is" replied my sister, flicking my nipple to add to my embarrassment. She tenderly picks it up, and somehow i can feel the red string as if it's part of my body. she then starts stroking it and sucking on the tip. Instantly I am hit by a powerful sensation as if someone is stroking and licking my...clit. That thing is my clit?!