Mom comes over dressed as a slut

You get out of the shower with Robin and barely dry yourselves before you're walking back to the main room to find your phone. When you find it, you pick it up and stare at it. You're eager, but what the hell do you say to tell your mother to come to your room to get fucked? Robin grabs the phone and helps you before you come up with a good response.

Robin pulls your towel away and takes a picture of just your cock taking up the length of the shot. Before you even process what she's doing, she's typing and hits send, then tosses the phone back to you. You hold up the phone to read it. The picture she took of your cock makes it look massive, and with it is just the text. "You looked like you needed a good fucking earlier. Maybe your son could help you?"

Will this really work? You can see that your mom read it, but there is no indication she was responding. You start to worry that something's wrong but then you hear a knock. You look to Robin and see she's sitting in the chair in the corner, her towel already open and touching herself, fingers gently tracing up and down her sex. She has a wicked grin on her face, knowing exactly who it is and that the picture and offer would be irresistible. She tilts her head indicating that she wants you to answer the door.

As soon as the door is open your mother steps quickly into the room in only a bathrobe. She closes the door behind you both and backs up against it, immediately flinging the robe off and letting it drop to the floor. She's wearing sexy black lace lingerie. The bra has sheer demi cups over her ample breasts so you can see her hardened nipples with the rest of the flesh spilling out the top. The thong is also mesh over her clearly wet slit, the lace sides crossing her hips and dipping in between her sexy butt cheeks. Despite all the action you've had, your cock springs to attention.

Your mom strikes a pose, hands on her hips, not even noticing Robin yet. "You're right baby, I do need a good fucking, and that beautiful big cock is exactly what I need." She says, licking her lips. Robin moans and your mother is startled, realizing that you two weren't alone. She's a little hesitant at first, but you quickly ease her.

"Don't worry, Mom... You see, Robin is the one that took that picture and texted you." Your mom lets out her own moan now, closing her eyes slightly. You reach forward and grab her pussy through the sheer fabric. She moans louder. You continue speaking in a soft tone but loud enough that Robin can hear too. "That's right, my sexy little slut of a girlfriend noticed you checking me out. She doesn't just want to share me with you, she wants to watch me fuck you." Both women moan loudly now, and you see Robin plunging two fingers inside of her hole.

Your mom is looking at Robin, and you grab her hair and **** her to her knees. "Show Robin how to get my cock ready." Your mother opens your towel and lets it fall as she quickly leans forward to take you in her mouth. You let her bob her head up and down just a few times before you can't wait longer and decide it's time for Robin to see your mother deep throat you. You take her head in both hands and fuck her face. She adjusts to take all of you even though the room is filling with the glugging sounds of you sliding in and out of your throat.

"Yes! Fuck! It's so hot watching you fuck Mommy's face like a dirty little slut!" Robin says from her perch in the corner. She's now playing with her tits in one hand and her fingers are furiously pumping in and out of her cunt. Your mom seems to moan in pleasure hearing it, and you couldn't be enjoying this scenario any more.

You hold your mom's head down on your cock for a few moments on the next thrust then let her up. Gobs of saliva pour out from her mouth and onto her tits. Your cock is shiny with her spit, with threads of it still connecting the two of you. She's breathing hard but looks up at you with adoration. "Yes, baby... Use your mommy like a cheap fuck toy. Use me however you want!"

You do just that, picking her up by her hair and leading her over to the bed. You push her head forward and she happily bends over for you, moaning loud. You don't even take her thong off, you just pull it to the side, revealing that her plug is still in. Robin gets up to get a closer look at the jeweled plug in her mother's ass. "You dirty little slut," Robin says playfully, without judgement, "I had no idea my mother was a whore for anal"

Your mother mentions nothing of your earlier fun with her, merely responding, "your boyfriend is so hot, I don't care that he's my son. I need his big fucking cock so much in my mouth, pussy, ass... Wherever he wants to put it!" Your mom holds her cheeks spread while you remove the plug and toss it to the bed next to her head. Robin sits at the head of the bed, spreading her legs and beginning to dinner herself again. You grab your mom's hips and push your thick cock up against her ass hole. It's slightly open from the plug but no where near ready for your size. Fortunately your mom's spit has you well lubed as you **** yourself into her hole.

She screams as she feels herself stretching to take you. "Fuck fuck fuck!" She cries as she grips the bed cover, knuckles turning white as you push her limit. The sensation makes her back arch and being her head back towards you. You take the opportunity to grab her hair and pull her head back. You now control your mother, impaled on your thick cock and screaming. You continue to give her deep thrusts but slowly for now.

As your mom adjusts you start picking up the pace. She's moaning louder and louder as she enjoys the sensation more. Once again it's Robin that really fields the flames. "Yes, that's so fucking hot baby. Fuck your mother like the little slut she is." You can't tell who enjoys it the most, as Robin throws her head back in pleasure, your mom moans and turns to Robin as if to beg for more, and you are just blown away by fucking your hot mother's ass at the request of your hot sister lover, right in front of her. Even after all the amazing orgasms you've had today, you know you can't last long like this. "Spank her! Spank that little whore's hot ass!"

Once again Robin's words ignore everyone and you happily oblige. Your mom gladly receives it and keeps it going. "Yes! Spank me! Spank me while you fuck my ass! Use me! Own me! Make me your little slut!"

The two of them together push you over the edge. "FUCK!" You yell out, burying your cock in your mother's ass as you explode. Your mom's legs shake as she cums hard with you. Robin screams loud and starts furiously jamming her fingers in and out of her pussy, making loud, sloppy, sounds. Soon she too screams and cums hard.

Once you feel your cock stop pumping in your mom's ass, you slowly pull out. Your mom slumps forward, collapsing on the bed with her ass high. Your cum starts leaking out of her gaping ass hole. Robin, still breathing heavily, peels her body up from sitting and crawls over to get a closer look. She grabs your mom's ass and peels the cheeks apart as she stares. "Mmm, it's so hot watching your cum sliding out of her ass..." Robin says, almost in a trance.

Without another word she licks her lips and slowly leans forward until her face is right up against your mom's butt. Your mom feels Robin's breath on her ass and lets out a low, slow moan. Robin pauses just for a second then dives in, instantly licking hungrily at your mom's well-fucked back door and eating your cum from it. Your mom moans loud but doesn't protest in the least, happily taking the attention.

"Now THAT is fucking hot!" You say as you watch, gently stroking your cock without realizing it. Robin is moaning tasting your cum from your mom, but your step closer and grab Robin's hair. She looks towards you and gets the hint, starting to work back and forth, licking the cum before it falls from your mom's ass, then opening her mouth to take your cock and clean it .

It's indescribable. You never thought she would go for any of this, but here she was sharing you... With your mother... Eating her ass... And cleaning your cock after being in it. You can't believe your luck and ponder what comes next. Now that Robin seems so open, you want to try pushing even farther. This family trip is about to get really crazy.