I let out a squeal as I struggled in the restraints. My asshole felt like it was on fire. The stinging almost more than I could bear. If Sis hadn't tied me down so well I would have broken free and ran. But then there was the sudden pop of relief. My asshole clenched back down onto itself, no longer on the brink of tearing and I could feel the object inside of me. Huge and stretching me still yet only deeper in my ass.
"Well that's the first one," I heard Mistress say as she gave the string a tug and I could feel it pull within me. "Never thought we were going to get that first ball in. They're the size of apples."
I was now gasping for breath, sweat rolling off my forehead. She left me ungagged because she loved the noises I made when I was in pain.
"These are the biggest anal beads I've ever seen, where did you find them?" Sis was now holding my ass cheeks apart with her hands looking at the heavy string now hanging out of me.
"Custom made, just to break my little slut. Now give your sister a good licking before we lube her up some more for the next one." Then I felt her tongue, licking my puckered asshole and all around the cord that now hung out of it. Mistress let out a moan of appreciation as she watched, she slurped loudly at my abused back door. "Okay that's enough now my dear."
"I love your asshole Sis." She said as she walked around in front of me with slobber all around her mouth. Wrapping her hands around my head she leaned in and kissed me, that tongue fresh out of my asshole and now lapping against mine.
"You two, I swear, God you are so cute together." I felt Mistress smearing more lube over my butthole and most likely over the next ball in line. "Only four more to go my little pet."
I whimpered into my sisters mouth. Not ready for that much pain tonight, but willing to do it for her.
"We've got over two hundred watching on the stream now. I'm sure that's going to go up. Especially when it comes time to pull them all back out of you." She slapped my ass and started to press the next one against my very unhappy hole, "Oh and wait until they see you having to clean them off with your tongue afterward."
