A final lesson

Mason reaches into a pocket and pull out two metal clamps, the kind used for holding sheaves of paper together. Valerie gasps as he grasps a handful of one breast, then squeals as he clamps the cold metal onto the nipple. When he does 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. Mason steps away from her, watching her squirm for a moment, then glances at you.

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

You're uneasy, but you nod as he walks behind the squealing girl, eyeing her writhing desperation. She howls when he slaps 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," he growls as he spanks 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!"

Mason nods at you and spanks her sweet ass again. You drop your pants to the floor and step out of them, your cock rampant and ready. Stepping close to her you grab her rump and lift her, impaling her on your meat as she wraps her legs around you 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 your back, writhing and bucking against you as you start to fuck her.

Mason steps away and you see him go into the kitchen. When he comes back he drops his pants and steps behind Valerie's writhing body, pressing his fingers into her ass.

"Oh God Daddy! Again! Oh God you're going to fuck my ass again! Oh God!" she squeals, her muscles tightening around your cock. You slow your pace as Mason takes his fingers out of her and presses his cock into her rosebud, forcing it into her as you slow your pace to let him fully impale the helpless brunette.

"Unnnnnhhhh! Unh! Unh! Uhhhhhhhhhhh!" Valerie grunts as he fills her ass for the second time that day, her tight cunt convulsing and gripping you like a vise.

"Fuck I can feel you inside her," you growl. "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 Mason 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.