Debbie finally gets what she deserves

Katia Noboli looked at Debbie White like she'd just tasted something rancid. The same girl who had smiled while Katia took blame for skipping class now knelt naked in the center of the practice room. Thick leather straps bound Deb's thighs open. A spreader bar forced her ankles wide apart. The black clamps biting her pink nipples dragged a chain that swung every time she breathed hard. Katia walked a slow circle around the girl. Her shoes made no sound. Debbie tracked the sound anyway, eyes wide but still managing that unimpressed lift of one perfect eyebrow. No words yet. Katia stopped behind her, dragged two fingers straight down Debbie's spine, then dipped lower and stroked right across her exposed cunt. Dripping already. She dragged the wetness up to circle the puckered rim of her asshole. A single leather glove and a metal speculum came out of Katia's bag. The speculum was lubed cold when it pressed inside, metal against heat, stretching Debbie open in one steady push. The ratchet clicked six times. Her opening gaped, pink and shaking. Katia wiped the lube off her hand onto Debbie's thigh before strapping a thick double-headed dildo around her own hips. No warning. She lined up and thrust in one long stroke until the front of her harness smacked flat against the spread metal. Debbie barked once. Her walls clenched around silicone but couldn't close. Katia leaned forward and gripped both of Debbie's clamped tits, pulling the chain taut, then let them snap back into place. Each thrust rammed the base of the speculum, forcing it deeper. Katia paced herself—slow withdrawal until the head barely sat inside, then hard return, hips rolling. Her pubic bone ground against the open ring. Pre-cum smeared both their thighs. Sweat ran down the backs of Debbie's knees. After ten counted strokes Katia stopped, stayed buried, reached around and flicked the clamp chain right and left. Every jolt made the speculum jump inside. Debbie whimpered through clenched teeth and the corner of one eye was already wet. She tried to play it cool anyway. Katia smiled, cold and satisfied, and started thrusting again. Harder this time. Longer. Faster. Until the sounds were slick and stupid and wet and the only things in the room were the slap of leather harness, the clamp chain ringing, and Debbie's broken breathing.