How could I say no after that?

After listening to Erin's heartfelt words, it is nearly impossible for you to find it in yourself to continue your resistance to the idea of being with her like she wants. And, really, you don't think you even really want to resist anymore. With Erin's feelings clear and her assurance that the other girls feel the same about you, you don't think you could deny the fact that, somewhere in yourself, you feel excited about the idea of being intimate with them. You do love them, after all, though it wasn't in a sexual way until the idea of it was presented to you.

You smile sheepishly to Erin and then give a nervous sort of chuckle that is accompanied by a nod. "Well, if you're going to say all that, how could I say no, Erin?", you say and you see another rarity as Erin's face lights up with a smile and that expression alone is enough to make you feel like you made the right choice.

"Ach, you should heff just agreed to do it in de firsd place, Dietrich. Vhy you hed to hesitate aboud dings, I do nod know.", your father's voice rings out behind you and you sigh as you give Erin an apologetic smile and turn towards the brain in a jar once more.

"Well, Dad, I've had a couple of bad experiences with sex because of some genetic tinkering that I know you had a hand in.", you state.

"I em sure I do nod know vhat you are talking aboud.", he says, evasively.

"...Really?", you say and, rather unceremoniously, you unzip your cargo pants and lower your boxers enough to let your manhood flop free and, when it does, it hangs down close to your knees, "This give you an idea of what I mean?"

"Ah. Det. You know, some men vould be heppy with de one who gifded dem wid such an impressive endowment."

"There's a line between impressive and scary. You ever tried to talk a five foot tall, ninety pound cheerleader into hopping onto a fourteen inch cock that's as thick around as my forearm?", you say with a flat stare, "It's not fucking easy."

"But you did manage it, ja?"

"Huh?"

"You convinced de young lady to, shall ve say, teke a ride?"

"Er, yeah. She didn't want to at first, but then she started giving me a handjob and got all worked up and changed her mind.", you say with a furrow of your brow, "The poor girl didn't walk right for a week afterward, by the way. I think I might have wrecked her."

"But she took det risk anyvay. Ah, gut. Det means de other modification vorks."

"...what other modification?"

"Er, did I say someding about a modification? I, er, do nod recall."

"Dad. What. Did. You. Do."

"Vell...I may heff, in consideration to de problem you heff mentioned vith convincing vomen to risk bodily harm to copulate vith you, added someding of a reflexive response. Much like meny frogs exude toxins from dere skin to deter predators, I heff made it so det your penis exudes a natural chemical det hes an aphrodisiacal effect on dose who come in contect vith it."

"...So you made it so that my erections are dipped in Spanish Fly?"

"Vell, det is inaccurate in some fashions, but your basic meaning is nod wrong.", he says.

"Jesus Christ, Dad, really? What the fuck? Just...what the actual fuck?"

"Now, now, Dietrich. Surely you must see det I vas merely trying to profide for your future. It hes hed a beneficial effect, hes it not?"

"Well...yeah, but that doesn't change the fact that you basically engineered me into a guy with a natural date **** **** oozing out of his freak show big cock."

"Ja, ja, you are morally outraged. I understend. Ve can talk aboud det later. I beleef you heff more pressing concerns et de moment.", your father states with some amusement in his voice and you furrow your brows in confusion until you realize where his floating gaze is aimed and turn to look at what he's looking at.

Your gaze falls upon Erin who, while you were talking, had taken the time to prepare herself for the sex you'd already agreed to by stripping off the leotard she'd been wearing. The garment hadn't left much to the imagination, but that didn't change the fact that seeing Erin naked was a completely and totally different thing that had your jaw dropping and your heart starting to beat faster. You tried to find words for a moment, but found yourself unable to do anything but gape for the moment.

Erin was muscular and her body was broad, but she still possessed the sort of feminine curves to her body that drew the eye and hardened the cock. She had fur upon her back and the back of her arms and legs, but her front was bare of fur or hair for that matter, leaving her hard, defined abs and dark gray skin clear to your view. That skin was smooth and surprisingly unblemished and graced her thighs and the apex of her thighs where you could see moisture from arousal glistening. That was a turn on, but the part of her body that got your attention the most was, by far, her breasts. Despite her muscle tone, they were large and round and tempting to your eye. On a normal woman, they'd be G-cups that hung heavy on her chest, but, on Erin's broad and muscular frame, they were firm and perky without a hint of sag as her hard black nipples crowned each mound and tilted upwards as she held herself straight and tall.

She reached a hand down along her stomach to her bare pubic mound, her surprisingly dexterous fingers dipping between her thighs to tease at her own slick and heated slit and causing her to shudder slightly. Another hand reached up to cup her own large breast, squeezing the ample flesh in her hand and teasing one of her nipples with her deft brushes of her fingertips. And, all the while, her clear blue eyes, now starting to haze with animal lust, were locked upon your own with the implicit invitation clear in them.

You feel that "freak show big" cock of yours start to stir as blood rushes out of your head and down into that monstrous shaft of yours. You're probably lucky you'd already unzipped and whipped your dick out to try and make a point because you've had experience where your erections were either painful because your dick was trapped in your pants and pressing against a zipper or raging enough to tear your pants asunder. You avoided both of those results by having your cock out already as it begins to rise up to it's full, impressive length and swell to a girth that even your own hand could not reach fully around. You sometimes wondered how you had enough blood in your body to support such a show of arousal without passing out, but you had no doubt that was just something else your father had genetically engineered into you.

Right now, though, the specifics of your father's genetic enhancements to your body are the last thing on your mind as your prick throbs with achingly potent lust and your body cries out for sexual release. And, with Erin offering herself to you so freely and looking at you with those beautifully hungry blue eyes of hers, you knew you couldn't focus on anything else but reaching that release with her right here and now. The only question at this point was how you wanted to take her.