>:)

Jenna moans and whimpers as your last knuckle sits in her sphincter, and your dick rests against her entrance. Suddenly, she tries to back up, trying to back-fuck your dick into her.
"Oh...So you've decided to be bad, then?" You take a step back, denying her your cock as she whines. She turns to look at you with a pout, just playful enough to let you know that she wants what's happening, that she's daring you to fuck her like a common whore.
"Ok then, naughty girl. If you aren't going to play nice, I'm just going to have to play..." you bump the backs of her locked knees with yours, dropping her ass down an inch or two. You pull your finger from her asshole with a pop, and replace it with your swollen, purple tip.
"Ahhhh......." Jenna's eyes squeeze shut as the pressure on her anus increases...."be gent....le...." you overcome the resistance of her exquisite asshole, and you dick begins to disappear into it.
"Why should I? Bad girls get fucked like bad girls!" You press onward and inward.
"Ooohffff.......Oh my god.....Your dick....." her mouth is hanging open now, and her eyes bulge as you plunder her asshole.
"You see," you begin nonchalantly as you bottom out, and then start to retreat, "if you we're being a good girl, and giving daddy your sweet little asshole on a regular basis, then this wouldn't be such an ordeal right now. But that's alright. I don't mind..."with your head almost fully retrieved, you suddenly change course and bottom out again, faster this time, "breaking you in!"
"AWWWWW......FFFFFFUCK!" Jenna is clawing at the desk now as you pick up the pace.
You grab her panties from the chair where you had dropped them, stuffing them into her gaping mouth.
"Shut the fuck up. Do you want everyone to come in here and see what a little buttslut you are?" Her eyes blaze above the wadded up material, but it seems more ecstasy than anger. You brush the hair back from her face. There are small tears leaking involuntarily from the corners of her eyes. Jenna knows she can end this with a single word: whenever you'd dabbled in this before, you had well established safety words. She's not saying them: she wants this. You reach down to feel her cunt, and your hand comes away soaked. She is a dirty little buttslut!
After a few minutes of rythmic pumping, her muffled moans grow less pained, and they build in pitch and intensity. Rather than passively accepting this butt fucking, she's actually bucking backward. Your balls slap against her taint as you pick up the pace, fucking her ass with gusto.
Her wanton moaning is intoxicating, especially when muffle by her own panties shoved in her mouth. You can feel the eruption brewing. Her ass is just too good for you to last that long. You spread her cheeks and pull free, leaving her to stumble backward at the sudden vacancy. You rip the panties out of her mouth, and she gasps and coughs and whines.
"Are you going to be my good girl now?" you press your head against her gaping hole, teasing.
"Yes!!!"
"I don't believe you. Make me believe it."
Yes, daddy! I'm your good girl. Please give me back your cock, daddy!" She's staring into your eyes over her shoulder, her face betraying her complete abandon in this moment. She's absolutely lost in the intensity of what you're doing.
"Good girl." Instead of getting back in that ass, you adjust your angle, and ram mercilessly into her soaking wet cunt. It's so lubricated that hilting yourself takes almost no effort at all.
"Awwwwwwwwwwwwww............." Jenna's mouth lolls open with the unexpected vaginal intrusion. Her upper body goes limp, and she pillows her head on her arms. "Aw! Aw! Yeah! Breed me, daddy!"
There's a turn of phrase you didn't expect! As if on command, your baby batter floods your hot wife's nethers with so much **** that some if it squirts out around the base of your dick.
"Ahnnnnnnnnnnnnng......." You sit back hard onto chair, enjoying the sight of your cum dripping down Jenna's thighs.
After a few seconds of panting, Jenna flips over, looking well and truly fucked. Her hair is disheveled, and her mimimal make up is little smeared. She wobbily starts looking for her shoes.
"Shit...that was....what side of whose bed did you wake up on today? That was crazy...and so fucking hot. I got to go! I don't...I'll have to fix my makeup in the car, you jerk!" she smiles as she says it. "Give me my panties, please."
"No."
She stops at the simple refusal. "What?"
You stand up, twirling her panties around one finger; they are damp from being in her mouth.
"No panties for you today. Your going to go get the groceries with my cum sliding down your thighs. No panties." You stare down into her incredulous face, and she puts a hand to her lips. "Is that a problem?"
".....no." It's almost a whisper.
"No......what?"
She understands..... "No....daddy. It's not a problem."
Jenna leaves the office, carrying the definite whiff of sex with her. And walking funny, you notice with pride. You take stock of what just happened. Maybe this was the start of a new chapter in your sex life with Jenna.
There are things to do around the house while she's gone, and you should probably do them. As you leave the office, however, your attention is caught by a flicker of movement.
From the open door of Riley's bedroom, adjacent to the office. You see the unmistakable sillhouette of Zoe. She's staring at you, panting and shaking her head with a smile on her lips. Oh, no.
Zoe lifts her hands, putting a finger from one into the curled up finger of the other, miming a dick going in and out of a butthole. She mouths the word "Wow!" Before you can say anything, she simply walks past you, smiling the whole time, her eyes never leaving yours, and trots down the stairs ahead of you.

That's going to come up later. You're pretty sure of that.

You spend the rest of the morning cleaning and tidying up, trying to return your headspace to normal. Tara helps, and then plops down on the couch to watch TV. When Jenna returns, you all help put away the groceries, and just as you finish that, twin car horns honk as they pull into your driveway.