Accept the upgraded huevos

"No problem at all, I can use the upgrade."

She lowers her head and sticks out her tongue as if to lick the tip of your dick, but instead part of her flows like drool and worms its way inside. The feeling is akin to peeing in reverse and you're pretty sure you aren't going to develop a new fetish from it. You brace yourself for when it invades your balls and begins the process of melding with them, altering them to the chosen form. The result is big, full balls.

"You can thank me by giving me a load. You have enough to go around now. Just tell me what form you want from me."

You think about it and have an amusing idea.

"Melona from Queen's Blade."

"That's a little on the nose. I'll take it as a compliment that you desire something so close to my true form."

She turns into her, albeit without anything covering her pussy and the hands formed from her bangs leave her nipples fully exposed. They leave her breasts anyway to give you a handjob and cup your balls.

"I know Cattleya is your favorite from that franchise; a buxom glasses-wearing milf; totally your type. So thanks again Master Dick."

She goes in for the blowjob and you grab onto the bunny ears while you ravage her face. She loves this kind of treatment. All four of her hands go limp as you use her again. When you pull out and let go, she expands her breasts to use like airbags. Now Cattleya sized, she rolls onto her back and spreads her legs. You take the hint and spear into her pussy while resting your arms around her absurd tits.

"Master, when I cum, do you want me to lactate profusely?"

"Well, it's fine if you don't leave behind a mess. Say, what would happen if I tried drinking your milk?"

"Since it's not really milk, but more of my body, if I don't remove it, it will try to assimilate like we did with your balls. I'm not sure you could handle that much at once, but either way you wouldn't be quite as human anymore."

"Got it. I won't be reckless."

You fuck her in a kind of scissoring position to watch her tits bounce as you thrust. She has mini orgasms from your precum and she goes wild.

"Do it. Cum inside me already. Jackhammer my pussy and fill me with your cum."

You finish in the jackhammer position and you cum so much, she can't absorb it fast enough to prevent leaking, having to absorb it through the skin of her hips, then waist as it spills down. She has a lactating orgasm and rests a minute before recalling the fluid and bringing her tits back to their more manageable size.

"I think I'll rest in my sleeve. Wake me up if you need a condom. Just stick your cock in and I'll do the rest."

You both rest up for the sleepover and before you know it, your sister calls you out for the meet and greet. You go down and get introduced to the friends you've been hearing about.

Serena is a Hispanic-looking girl with straight shoulder-length black hair. She has C-cups under a plain tee and wears bike shorts. Kind of a tomboy, she plays on the girl's basketball team. When the others aren't paying attention, she whispers in your ear about wanting to test your "potential as a sexfriend".

Brianna is a black girl of milk chocolate hue who wears her black hair in a ponytail. She has DDs like your sister, and she wears a white midriff and low-riding leans. You can barely make out her yellow bra through the fabric. She hasn't decided what kind of relationship she wants from you, if any, but Serena whispers a rumor that she's a size queen.

Finally, Suki is of Japanese descent, like the slime girls started out pretending to be. She has neck length dark brown hair with bangs. She wears glasses and despite wearing a hoodie, you can tell she's the has the biggest bust here. You'll have to get it off to find out how she compares to your mom. She wears sweatpants as well. She blushes as she catches you checking her out and looks down. You always had a soft spot for shy types.

You all have small talk for a while and mom comes out with snacks for the group. She's wearing pajama pants and a sweater with slight cleavage, more when she leans down. You're the only one that catches on that she's trying to be sexy. Perhaps she's even jealous of these younger women as potential sexual rivals.

Serena brings up truth or dare and after you agree to wanting to play, it doesn't take long to set it up with a bottle and everything. After some discussion, the turn order is Anita, Serena, Brianna, You, and Suki. She spins it and it lands on Serena. Serena chooses truth and Anita asks what her intentions are with you. She answers very honestly.

"I want to test him in the bedroom and if he's good, I'll make him my sexfriend. He can do what he wants with whoever, but I'll let him go if he gets a girlfriend who's not okay with sharing."

She winks, possibly hinting she stretched the truth with that last part. What a sneaky little minx. It's her turn next and it lands on you. You don't want to risk the kind of dare she might come up with, so you pick truth.

"How long is your dick?"

Of course. She might give you and Eileen a run for your money in the pervert department. To the surprise of everyone, you don't hesitate to answer.

"10 inches hard. I can't prove it though unless I'm dared."

You definitely earned points with her and now you have Brianna intrigued. It's her turn and it lands on Anita. It looks like she's disappointed it didn't land on you again. Anita doesn't want to risk being asked about her sex life so she picks dare.

"Give your brother a lapdance until he gets hard."

She must really want a hint to your size. Your sister doesn't protest and takes a seat on your lap, making a show of grinding against your crotch. You're already hard when she sits on it but keeps going as long as she can get away with. When she gets up they can all see the tent you're pitching in your pants, and everyone except the embarrassed Suki stares until you spin the bottle on your turn.