Let him teach you anal

Peter begins giving small hidden thrusts into you while you weigh your options, still wanting to obey your father, but yet wanting to feel a moving sensation rather than just sitting there with his cock inside of you. This feels considerably better than anything else he's done thus far, especially with the way his pelvic bone grinds into your clit each time he moves. You decide to go with the sensation to increase your arousal, closing your eyes and picturing your father's big cock penetrating your ass or your throat in turn, deciding which seemed worse.

You figure Pete's finger didn't feel too terribly bad when he stuck it up your ass earlier, especially after he lubed it up. Meanwhile, you seemed like you gagged easily the moment your dad's cock reached the back of your mouth. You can't imagine trying to fit the whole thing down. You can't believe the decision you're about to make. This birthday is terrible already and it's less than an hour in.

"I guess we can do butt stuff if you really want to." You say, slightly grossed out but the thought but knowing your father is right. You're gonna have to get used to it one way or another. "Just make sure you use a ton of lube please, daddy... I'm really scared."

Your father's heart completely melts when you say the last part, deciding to make it his personal mission to give you the most comfortable experience he could possibly can. Your spit from the blowjob earlier has long since dried anyway. "Of course, sweetheart. I would never want to hurt you."

He pulls out a small bottle of lube he must have brought with him and begins applying a liberal amount to his cock in front of you so you can see. You get a little irked that he didn't bring that out before you sat on top Pete, practically bone dry, but you're happy he's using it now. You feel slightly comforted by your father's promise not to hurt you, not realizing how untrue that would seem later in life. You've always been a daddy's girl before now and he's usually treats you extremely kindly. You try to relax for what's about to happen with this in mind.

Your father walks behind you and wastes nearly the whole bottle of lube, pouring it down the crack of your ass. He uses an extremely excessive amount, not only to comfort you, but so that the extra drips down to lubricate your brother as well. The cock is too deep inside you to receive much, most of it running down his balls to join the spot of virginal blood already ruining your sheets, but you appreciate the effort nonetheless.

Your father puts a finger on your tight back hole, waiting a moment for you to unclench it before slowly pushing it inside. You yelp a bit, but all the lube has it feeling uncomfortably good immediately, especially with Pete still slowly grinding into your clit. He begins putting in fingers one at a time, making sure you get comfortable with the level of stretching before adding another. By the time you're comfortable with the third one, he feels like you're ready for the thickness of his cock.

"Ready, sweetie?" He asks you in a way you can't help but finding somehow sexy. You breathe out an accidental moan and nod gently in reply.

He lines himself up and pops the head neatly inside your well prepared hole and you moan again, even louder. Your father gets emboldened by your positive reactions, pushing his over-lubed pole into you at a steady pace until his hips come to a rest on your tight round butt, then he freezes to make sure you're he isn't hurting you. He leans in close to your ear and whispers to you again. "Are you okay, baby?"

"...un, yeah...." You say, not really meaning to sound like a pornstar with the moaning way you say it, but nailing it anyway.

He begins thrusting softly, pushing a bit farther when he reaches the hilt to move you up on Pete's cock and letting you fall down on him gently as your father pulls back for the next stroke. This feels immediately amazing in both holes, leading you to let out a constant moan that you couldn't stop if you tried. Your father feels more and more excited by your reaction, reaching around and grabbing your breasts in a much more pleasurable way than your brother had previously. He gently teases your nipples in an experienced way, causing you to shudder and moan louder as he slowly picks up the pace.

"Still okay?" He whispers to you softly, his breath tickling your ear and making you shudder again.

"Ah! Yeah! Ah!" You start to shout, trying to get your moaning under control but failing.

He continues moving you up and down the two cocks inside you more quickly with each thrust, soon going full speed while still pounding into your ass hard enough to make a loud slapping noise between your bodies. Pete joins in and matches pace as well as he can when your father reaches full speed, making you moan even louder as you feel something inside of you building that you suspect might be your first orgasm.

"Still okay?"

"AH! YEAH! GOD YEAH!"

"Think you can take a violent anal fucking from a stranger now?" He asks, pulling back and asking you at regular volume. The bizarre question almost sends you over the edge. You barely register what he's even asking, ready to yell the affirmative anyway.

"YEAH! YEAH!"

"Good!" Your father says, quickly pulling out of you and standing up straight, stopping a single stroke from your orgasm. You scream in displeasure as you get a major case of blue balls, grinding on the cock still inside your pussy in frustration to try and get the feeling back before it fades away entirely. "Come on, Pete. Let's give her the donation."

Peter tosses you off of his lap unceremoniously, apparently close to orgasm himself anyway. The two men pump their cocks above you as you slowly bring yourself up to your knees. You look at them with a worried expression for a moment before your father grabs your head and points his cock at your lips while still quickly jerking his dick. He commands you to open your mouth rather sharply, so you do, wincing when his dirty cock begins to touch your tongue.

You don't have much time to complain before he starts to explode, pushing himself to the entrance of your throat and fucking your face as he fills your mouth with the taste of your first proper donation of many. Your cheeks quickly begin to swell with the copious seed as he starts to finish up, when a splash to the side of your face and a grunt signifies your brother's donation will be a facial. A shot hits you in the eye and you moan out a loud complaint around the dick in your cum filled mouth.

"Dammit, Pete! Wait your turn!" Your father snaps as your brother finishes plastering you with his dose. He pulls your head away from him and turns you towards the oozing cock beside you. Pete squeezes out the last drop on your tongue, then pauses before sticking his cock in your mouth to clean himself when he realizes you haven't swallowed yet. You get the hint from the look on their faces, gulping down the mouthful with a wince, then sticking your tongue out and opening your mouth wide to show them your empty mouth.

"Good girl!" Your father says proudly, as Pete uses the opportunity to slide his cock along your outstretched tongue and into your mouth. Your father suddenly notices the hint of red on your brother's dick and physically shoves him away from you. "What the fuck, Pete! Go wipe that off!"

Your father's orgasm guilt is quickly setting in as he thinks about everything that just happened, but remembers how much you seemed to be enjoying it by the end and tries to feel like he did a good thing by helping you out anyway. He smiles at you as you begin scooping the cum out your eye and into your mouth all on your own. Pete cleans his cock on your pink pajama pants, ruining them forever in the same way as the sheets.

"Happy birthday, sweetheart! There's a present for you on the dresser! You can put it on before you come to the party downstairs... Unless you wanna party in your birthday suit!" He laughs at his own bad dad joke as the two of them leave the room, letting in the sound of a crowd downstairs into the room before silencing it when he closes it behind him.

Party? It's 1 am! Is he even letting you home from school today? You need to sleep! You look over at the purple box with a gold bow on your dresser and get a sinking feeling in your stomach as you walk over to the mirror to clean the rest of your brother's cum off of your face.

It's gonna be a long day, you think to yourself.