A final lesson

You reach into a pocket and pull out two metal clamps, the kind used for holding sheaves of paper together. Valerie gasps as you grasp a handful of one breast, then squeals as you clamp the cold metal onto the nipple. When you do the second nipple she screams, writhing and shuddering.

"Daddy, oh God Daddy, please Daddy, please take it off I'll be good oh God Daddy I'll be good!" she howls as she writhes, her face a tearful pleading mask. You step away from her, watching her writhe for a moment, then glance at Brian, who looks uneasy but obviously excited.

"I'm going to spank her again," you say. "When I nod at you, start fucking her."

He gives you a nod as you walk behind the squealing girl, your cock hardening as you look at her writhing desperation. She howls when you slap her rump, leaving a red handprint on her pale flesh.

"Daddy! Please Daddy! I've been good! I've been good! Please Daddy," she begs piteously.

"This is to remind you of what will happen if you disobey your Daddies," you growl as you spank her writhing body. "This is what will happen if you don't behave."

"Oh Please Daddy, Please!" she squeals. "I'll be good, I'll always be good for you Daddy! It hurts, oh god my nipples hurt Daddy oh God I'll be good I promise!"

You nod at Brian and spank her sweet ass again. He drops his pants to the floor and steps out of them, his cock rampant and ready. Stepping close to her he grabs her rump and lifts her, impaling her on his meat as she wraps her legs around him with a sob of relief.

"Oh God thank you Daddy, thank you for letting me please you, I'll be so good for my Daddies, I'll show you how good I can be, Oh yes Daddy fuck me, oh yes fuck me," she moans as she locks her ankles behind his back, writhing and bucking against him as he fills her.

You step into the kitchen and get some butter out of the fridge, breaking off a chunk. You drop your own pants and step behind Valeries writhing body, pressing the butter into her ass and lubing her.

"Oh God Daddy! Again! Oh God you're going to fuck my ass again! Oh God!" she squeals, her muscles tightening on your finger. You pull your finger out and press your cock against her rosebud, forcing it into her lubed hole as Brian slows his pace to let you fully impale the helpless brunette.

"Unnnnnhhhh! Unh! Unh! Uhhhhhhhhhhh!" Valerie grunts as you fill her ass for the second time that day, her tight sphincter gripping you like a vise.

"Fuck I can feel you inside her," Brian growls. "She's so fucking tight!"

The two of you find a rhythm and start to pump into the writhing teen as she bucks and howls, her orgasms hitting her like a tidal wave and making her shudder and tremble with uncontrollable ecstasy. She's grunting frantically, sounding like a rutting animal, her body warm and damp with the sweat of her excitement, coming over and over again as her tight hole milks your cock. Suddenly it's you and Brian doing the howling as you explode inside her, your own orgasm so intense you feel like the top of your head is going to blow off.