"Cock endurance."

"And day one is for getting her ass ready." Missy says as she fastens the strapon on.

And you watch as she gently bends your wife over the couch and shoves the thick rubber cock inside her asshole.

She fucks Nicole hard in the ass, reaching over and pulling her hair, arching her back severely as she does so. "Tell me when it's too much bitch." Missy says.

"Never" Nicole answers through gritted teeth.

And finally Missy pulls out, then turns her head to you. "Your turn." She smiles.

And you take your turn. Shoving your cock inside your wife's ass just like Missy did. Just like you did last night. Except there's somehow a 180' difference now. That was a husband and wife making filthy love. This is training. It's clear to both of you that this is training. And you notice the 'Slut' tattoo on her shoulder, it now says 'alt bitch fuck...' before it. Missy wasn't kidding. You say the words to yourself. "Alt bitch fuck slut" your wife, who squeals as your cock thrusts deep in her ass.

Then it's Missy's turn again. Then yours. Then Missy's. The two of you fuck your wife's ass for hours. Nicole takes it all like a good slut.

Day 2 is for "getting her cunt ready" as Missy puts it when they greet you when you get home the next day.

You start to pull your pants down to help but Missy shakes her head. "Not today" she says. "A normal sized cock isn't going to do the trick, I'm afraid." And Missy grabs a bottle of lube and starts to spread it on her hand and forearm.

So you sit back and watch Nicole spread her wet pussy for Missy, who shoves two fingers in, then three, then four, then her hand, then her arm as deep as possible.

Nicole's eyes roll back in her head and she makes wild, inhuman noises.

"Not deep enough for you bitch!" Missy says with a laugh. And after a few minutes finally pulls her fist from your wife's now wide stretched pussy. "That's it for today." Missy says.

"No. More." Nicole responds. But Missy just shakes her head and starts to wipe her forearm clean. "More!" Nicole demands. But she's in no position to make demands.

Your wife spends the rest of the night trying to shove her own fist into her twat as deep as possible. Her eyes glossed over in a glassy haze. This is her now, you think. This is what she's becoming.

Day 3 is for "getting her throat ready" says Missy who has set up 3 thick suction cup dildos on the mirror in your bathroom. Nicole alternates from one to the other, trying to take them as deep as possible. If she gags or wretches, Missy pulls her of the toy cock, yanks it from the wall and whacks her across the face with it. Within in an hour her left cheek is bright red.

You take pity on your wife. "Are you okay?" You ask her at one point

"No" She responds. "When I get this right and become a good fucking slut, I'll be okay" she responds.

Day 4 is for putting it all together. You fuck Nicole's ass. Missy's fist goes up her pussy, and the toys down her throat. And she does a phenomenal job. She takes it all like an experienced slut and at the end of the night, softly, submissively asks Missy for "more"

"Wait for tomorrow" Missy says.

And tomorrow you get home to find your wife fucking 5 guys. You don't expect it. Seeing it makes you immediately shocked. Seeing it makes you immediately hard.

"This is my friend Jason and his band" Missy says to you, motioning for you to sit next to her on the couch and watch.

Which you do. You watch as your wife takes one cock deep in her throat, another in her cunt, two in her ass. Then the boys stop and switch places. It's like a game of musical holes and your wife is the prize. Then again, she's also the game. She's so focused on the cocks inside her, you're not sure she even notices that you're in the room.

Missy, however, clearly knows how turned on you are by her newest orchestration. As you both watch, she reaches over and places her hand on your thick bulge. Then she slowly unzips your pants, reaches in and pulls out your cock.

She jerks it.

All this time thinking of Missy as your wife's teacher, you never thought of her as a sexual partner for you. But she seems to enjoy having her hand wrapped around your thick throbbing member. And you enjoy it too.

Slowly the show in front of you comes to an end. One man cums all over Nicole's face. Another cums all over her hair. A third pulls out of her throat and finishes on her tits. Two more on her face.

And you cum too, exploding all over Missy's hand. "What do you think?" Missy asks.

"I think you've done an amazing job with her. And she's done an amazing job too." You say, glancing at your wife who lays on the floor in a cum-covered glaze as the men dress and leave.

"Wait until you hear what week 2 is all about." Missy says, licking your cum off her hand.