Andrea helps you fuck Kim

When Andrea is **** up by her mother, you try but realize you may not be able to hold out any longer. You lean into Kim with a worried look and tell her, "I don't think I can hold it in much longer, if I go now, Andrea won't stay around to help --" Kim responds, "get my ass all nice and slick for your cock? Don't worry, I have an idea."

After your mother proudly announces her daughter's achievements, Kim gets off your cock and says, "congrats, but we should get a moving. John's been needing to cum for so long, this is getting a bit ridiculous. My pussy is getting tired so I'm going to just suck on his cock for a little bit but Andrea, get behind my ass and get going, will you!!"

With that, Kim moves around to sucking your cock while swinging her cute little butt in the air. Andrea doesn't move and when your mother starts yelling at her to get into place, you cum straight into Kim's mouth. Kim swallows all your cum and keeps on sucking your cock, pretending to go up and down the full length as she was before.

Meanwhile, Andrea, at your mother's direction, has been weakly and poorly giving a single slow lick at a time to Kim's ass. Kim breaks from sucking your cock as you get semi-hard again, moving to just using her hands, to yell back, "Andrea, what are you doing? John knows how to lick my ass better than that and he's a GUY only doing that to fuck it. Hurry up, John really needs to cum. Forget it, this isn't working."

With that, Kim moves forward and reinserts your cock all the way up her pussy. She motions your hand to start fingering her butt as she yells back "Andrea, get over here now! We are **** to having JOHN finger my ass while waiting on you."

Your mother grabs Andrea and forcibly pull her to Kim's ass and tell her to start licking Kim's ass which she starts to do with some effort, including inadvertently licking your asshole-inserting finger. Your mother moves the bowl over towards Kim's ass and Kim decides to start directing Andrea again.

As Kim looks back and directs the scene, you keep fucking her in a steady pace while moving to kiss her breasts and rub her clit as a thank you. "John, you don't need your finger anymore. Andrea, clean his finger right now ... Andrea, keeping on licking my asshole that way, just in a circle, a little more tongue inside, that's good ... Andrea, let's get one finger inside my ass, good, just a little more effort ... Ok, a second finger ... Good ... Now, let's go ahead and wet those fingers with your juices from the bowl, yeah, take those wet fingers and coat the inside of my ass ... Yeah, go back and coat the left inside, now the right, now the bottom insides, now the top ... let's try a third finger, no, Andrea, not dry, go back to the bowl and get more liquid, my ass needs to be slippery for John..."

You stop focusing on Kim and watch the scene as your bitchy older sister is busy soaking her fingers into a mix of her juices and your mom's saliva and inserting that rectally into Kim's anus. All the while, your mother stands on the side and watches to make sure that Andrea does a good job.

You feel Kim's pussy just tighten and loosen as she repeatedly orgasms, probably less from the actual fucking you're giving her and more from the humiliation your sister is having. Kim then looks straight into your eyes and starts to give the last orders, "Ms. Doe, can you grab the bowl and raise it? Andrea, how about your take those three fingers, open up my ass and just pour the rest of bowl into my ass? Your mother can help you."

Kim looks straight into your eyes, watching to your reaction instead. You watch as Andrea opens up Kim's ass and starts pouring all the liquid into it. It starts spilling everywhere given the constant steady motion of Kim's ass as you fuck her while this happens.

Andrea finishes pouring the bowl into Kim's ass and says "Done." When she does that, Kim, still staring straight into your eyes, raises herself from your pussy with her ass dripping everywhere and in one fell swoop pounds your cock all the way up her ass.

Kim's ass feels as slick and wet as her pussy but in an entirely different way. It's not warm but milder than her pussy but warmer than lubricant would be. Realizing that your cock is now fucking a mix of Kim's ass, Andrea's pussy and your mother's saliva, you last barely a minute before you grab Kim and kiss her wildly before cumming completely into her ass.

Kim moans out loud at a volume that hurts your ear drums. Your cum, combined with her ass contents, just spills and spills everywhere onto the couch. It's a complete disgusting mess of liquids lying everywhere.

As Kim pants and holds onto you, you announce "Well, like I said, I needed all that to cum. Andrea, do you mind cleaning Kim and me up before we go upstairs and shower?"

Andrea protests, "Why the fuck should I CLEAN you two perverted freaks up BEFORE you shower? You sick, disgusting ---," to which your mother interrupts, "ANDREA! Kim is our guest here! Kim here has generally offered to not just let John fuck her in the ass but to let John ravage her with YOUR bodily fluids! All so my little baby boy can cum! John needed your help to cum and Kim was more than generous in being the actual ass he fucked. The least you could do for her is clean her up a bit." Looking around the room, she finishes, "Besides, there's a lot of cum here that needs to be cleaned up before your friends arrive, my dear."