Too many options... Let's ask them for suggestions!

But, naturally, with seemingly endless possibilities came choice paralysis. Even with Pinkie's big blue eyes sparkling at him with pure joyous anticipation and the tall and small members of the Cake family flanking her with eager and nervous expressions.

"Well..." Isaac began hesitantly, "admittedly this is my first time meeting some of you, so let's start with a quick round of introductions and what we're hoping for. I'm Isaac, and I want to be the Harem Master, have my manhood worshiped, and get smothered in affection." He then tilted his head toward the Cakes.

They looked among themselves, looking rather **** all of a sudden. And after a moment, Isaac realized why: As casually lewd as the world might be, admitting their deep sexual desires in front of each other was still a little weird.

Isaac put up a hand. "Sorry, correct me if I'm wrong, but... In this world, everyone's overall kind of ambivalent about ****, since there's no health risks but it also complicates the emotional relationship of the family, but you're all willing to play up the taboo sometimes for the sake of sharing the Master, right? And once you're all adults, there's no shame about discussing sexual topics in front of each other frankly and honestly, or discussing each other's sexual interests with other people, right?"

The Cakes all relaxed at once. Mr. Cake looked less nervous and more excited. Mrs. Cake openly rubbed her breasts as she waited her turn. Pound Cake had gone from pouting and hiding behind his father to bouncing while hovering in midair, looking at Isaac with an excited gleam in his eye. And Pumpkin Cake was openly aroused, staring at Isaac's cock while fingering herself.

"Well, of course!" Pinkie Pie answered, unaware of the effects on the family she was staying with. "I'm Pinkie Pie, and I just wanna see you smile! Really! I wanna see that O-face and then the look of relaxation that comes from having a real good cum! That's the good tingly stuff! So whatever you wanna do, I'm the filly to make it happen!"

The now eight-foot-tall Mrs. Cake nodded and went next. "I'm Cup Cake, though most ponies just call me Mrs. Cake. And I'm in the same boat as Pinkie – I really like to nurture and fulfill the desires of the ponies I love~." She leaned up to Mr. Cake and kissed his cheek, making him giggle and shudder in delight.

Pound Cake raised his hand like he was in class. "I'm Pound Cake, and... and...!" He gulped, then said, "I wanna... I wanna serve you...! I want you to tell me what to do to make you cum, and then I wanna do it...!"

Pumpkin Cake squirmed where she stood, swaying from side to side and making her huge shortstack tits sway after her. "P-Pumpkin Cake... Celestia, you're so huge... and so different from any other cock... I-I really want to feel it, inside me, against me, I don't really care...!"

Mr. Cake nodded proudly. "And I'm Carrot Cake. And Isaac... I'm gonna level with ya." He wrapped an arm around Mrs. Cake's shoulder with a loving smile, looked down at him into his eyes, and said, "I really need you to fuck my wife."

That took Isaac aback a little bit. Sure, putting all other males on a spectrum between femboys, muscular bottoms, and cuckolds had been one of his first changes, but it was another thing to have it repeated back to him so bluntly like that!

"My wife is the most beautiful mare I know, not to mention my best friend, and I'm lucky to have her in my life," Mr. Cake continued breathily, like he'd been holding this in for a long time. "That's why... I want to give her the best gift possible, and that's the cock of a real male. I wanna watch as you take my wife away, claim her as your harem ****, and use her to your heart's content." The baker's own cock throbbed in its sleeve as he described his innermost desires. "And if you take my lovely twin foals, the fruit of my loins and my wife's womb? Fuck, that's even better~!"

Mrs. Cake blushed happily, like she'd been given the most wonderful compliment. "Oh, Carrot~. You're such a generous stallion~." Pound and Pumpkin smiled bashfully, as if their parents were embarrassing them by getting all romantic. Pinkie Pie just beamed, soaking up all the positivity in the air.

"Holy fuck..." Isaac murmured under his breath. Truth be told, he'd thrown in that cuckolding line on a lark, mostly so that there'd be no obstacles to him fucking married mares, no army of wronged husbands coming after him. He didn't usually have an active desire to be a homewrecker and shame otherwise upstanding guys who were treating their wives right. But this eager, enthusiastically consensual angle? ...Fuck, new fetish unlocked for sure. "Alright then, that sounds like the most pressing desire at hand."

"No no, it's alright," Mr. Cake insisted sheepishly, "you're the Master here, it's your call, you don't have to-"

"Mr. Cake, sit down in the corner," Isaac interrupted with an order. "Cup Cake, get that huge sexy body over here."

Carrot Cake stiffened – in more ways than one – and obediently walked over to one of the chairs near the party tables and sat down, putting one hand on the base of his long ponycock. Cup Cake strutted towards the bed, swaying her wide hips and her enormous milk-filled tits as she looked down eagerly at him. "How do you want me, Isaac~?"