Go to the Big Barn

You yawn again, which is weird because you're pretty used to getting up early, and Jenny just rolls her eyes at you.

"Well happy birthday!" booms your father, bringing his twins in for a strong hug in his thick arms and barrel chest, that you both return mostly in a perfunctory manner. "Look lively, guys," he says, noting your lack of excitement. "Today you finally get to see what's behind these big red doors! Aren't you super stoked?"

Having come from a long line of farmers, your father only really learned about more modern slang through the old movies he rented every now and again when he went into town. Even though they'd had satellite internet for about 10 years on the farm now he still hadn't bothered to learn much more in that department since watching those 90s surfing movies he rented but forgot to return. Anyway, your father and older sister shrug at each other and walk towards the big doors, already unlocked, and put a hand on each handle, taking a moment to pause for effect.

You and Jenny don't seem particularly enthused, so they shrug again and finally pull the doors open.

"Oh. My. God," says Jenny, placing her hands to her cheeks dramatically. You stare at the revealed internals of the barn... and while you have a minor reaction somewhere beneath your overalls, the contents of the Big Barn were pretty much what you and your twin had guessed. It was just a milking station... sort of. The barn was so huge so there must have been more to it than that.

"Yeah, wow," you add sarcastically. Your sister smirks at you.

Ignoring how unimpressed his kids were, your dad waves you in and you follow. You do stare a little at the immediate setup closest to the door. There are four cows lined along a wooden wall, each with their upper bodies hanging out of windows. They lean on the padded window sills with their tits out, long suction cups attached to their teats, connected to long hoses to drain their milk into metal canisters. You did find it a pretty sexy, to see the girls all lined up like that. They smile at you as their breasts are gently sucked by the machines, quietly mooing on occasion. You always wanted to suck on a pair of cow tits yourself and had often jacked off to the thought in your alone time.

You wonder how animal 'nudity' could still turn you on after all these years hanging around the cattle. They never wore clothes to begin with, even after morphing, and would strut around proudly showing off their breasts and butts... their thick thighs and tight...

"What are you doing?" you hear your sister Jenny say. You turn around and get ready to explain that you weren't really staring at the cow tits but realise she wasn't talking to you. She's talking to your older sister Betty who has started to disrobe. You thought it was odd that she had just been wearing a plain shirt and shorts to the barn, and now you see that she has only been wearing those two articles of clothing. She doesn't have any underwear on. In moments your big sister is just standing before you completely nude, and you see that she's super fit and super sexy and suddenly she's not just a big sister to you any more. You stare openly at her bared tits, larger than you thought they were, her collar bone and cleavage area freckled too, then your eyes lower to her neatly trimmed pussy. "Oh my god, Dad!" Jenny yelps, and your attention is turned to your father who has also gotten completely naked too, standing there with his broad shouldered, muscular frame, for all to see. He's like a slightly taller and wider version of you with greying hair and more wrinkles. And he has a huge erection. "What the fuck is happening?" your younger sister cries grabbing your arm.

You stare at her blankly and try to shrug but everything is kind of fuzzing your brain now as your blood rushes to your nethers. The sound of the cows gently moaning and the strangely alluring smell of the barn is having an affect on your body. Not to mention the familial nudity.

"It's just easy to wash things off in the shower rather than scrubbing dirty clothes," explains Betty, which barely explains anything really.

"C'mon no need to be all shy now, kids," your dad says, walking over to the cows. You notice the herd's eyes are now tracking your father's erection and your confusion grows. "So do you want to help milk the cows or collect some chicken eggs?"

It's asked so simply, like it's just any other day and it's just any other barnyard task, that you almost feel like it is a normal day. But it really isn't and your equally confused sister looks to you helplessly. She seems too shocked to reply and you figure she's just going to stick with you to try and see this weirdness through, so it's up to you to make a decision.

One of the cows looks up at you, smiling gently, her big tits swaying though the window. You swallow and look to your naked older sister, who seems to be waiting for your response before she heads deeper into the barn to, supposedly, tend to the chickens.