You go with the flow

"Sure..." you say, deciding to go with the flow as long as Kendra and Alexa are willing. You're not sure what Kendra's angle is, but you're certainly not going to say no to any of this. You slowly remove your shirt, keeping eye contact with Kendra to make sure she's okay with this, and she nods slightly for you to continue. Next you take your pants and boxers off together and get naked. You're only semi-hard since you were confused by the situation while ogling Kendra and Alexa's hot bodies. You walk up to the sisters.

Kendra immediately reaches out and grabs your cock. "Alexa, is this what the doctor used to treat your discomfort earlier?" she asks her sister.

Alexa looks down at your cock in Kendra's hand. "Yes, although it was harder and a bit longer just now," she says.

"Well, then we better help the doctor get his 'tool' ready for treatment. Sit down, doctor," Kendra says, motioning to a nearby sofa. You sit down obediently and the sisters stand in front of you.

"Alexa, do you know how to get the doctor's tool ready?"

Alexa shakes her head.

"Here, let me show you," Kendra says, and she kneels between your now spread legs. Alexa follows her lead and does the same. Then, Kendra leans forward and sticks her tongue out and licks your cock from base to tip. She then looks at Alexa and nods, and Alexa proceeds to imitate her actions and licks your cock the same way. You groan in pleasure and the sight of the beautiful women attending to your cock. The sisters alternate licking your cock until Kendra ups the ante and wraps her lips around your cock and goes down on you. She sucks twice before turning it over to Alexa, who does the same. Kendra is obviously more experience and knows what she's doing, but you would take a blowjob from either of them any day.

You're already hard but this joint oral action continues for a while and you're happy to let them keep going. Kendra eventually stops and holds your sloppily wet cock in her hand. "See? It's all ready. Good job Alexa," she says and Alexa smiles at the praise. "Okay, the doctor is ready for treatment. Why don't I go first so you can watch?" Kendra suggests and Alexa agrees.

Kendra motions for you to get off the sofa and all 3 of you stand. Kendra removes her panties and also pops her magnificent breasts out of her corset. You're tempted to grab her exposed breasts but you've been following her lead so far and you don't want to upset her, so you just wait to see what she wants to do. Kendra sits down on the sofa in your place, leans back on her elbows and spreads her legs. Her pussy is mostly shaved with a triangular patch of pubic hair almost like an arrow pointing to the destination. "Climb up here, Alexa, so you can watch," she says and Alexa does as told, climbing onto the sofa behind Kendra. "Okay doctor, I'm ready for you to administer the treatment," Kendra says and you grab 1 of her legs for leverage and move in on her, pressing your cock against her pussy. "Go ahead, treat me," Kendra says and you grin, knowing that she actually means "fuck me". You're happy to and you plunge your cock into her pussy. She's not as tight as Alexa but she is dripping wet and you start fucking her slowly.

"Oh yeah... treat me, doctor," Kendra moans as your hips rock back and forth. "Oh yeah... it feels so good... Alexa, you see how the doctor is treating me?"

"Yeah, although that's not how he treated me earlier..."

"Oh yeah, that's... called the doggystyle of treatment. Because that's how vets treat dogs. It's 1 way of treatment. This is a human style called missionary..." Kendra explains to her not-so-bright sister while you fuck her.

"Doggystyle... missionary..." Alexa mumbles to herself, like she's learning and trying to remember what Kendra is teaching her. "Got it... so there's 2 ways of treatment?"

"Well, there's a few more... Perhaps the doctor can show you another way when it's your turn for treatment," Kendra says.

"Okay, but can I try this way first? Billy only does it doggystyle too," Alexa says. You gulp as you realize she's talking their mother's boyfriend and you're not sure if Kendra is aware of him taking advantage of Alexa too.

Kendra blinks and she turns to Alexa. "Is he still doing that? When was the last time he did it? He promised me he would stop," she says. She knows and she sounds pissed. You're going to need to hear more about Billy later.

"A few weeks ago, I think. It's okay, he says it's good for me and it makes my discomfort go away," Alexa replies and Kendra sighs and looks disappointed. Kendra turns back to you and holds up a hand to tell you to stop and you stop moving. She then slips off your cock and motions for Alexa to take her place. "Go ahead Alexa, let the doctor treat you missionary style," she says, helping Alexa get into position. You help out by slipping her panties off to reveal the pussy you pounded earlier today. You slip into Alexa without hesitation and she moans softly in approval as you start fucking her.

"Look at him," Kendra says to Alexa, her face next to her sister's. "You can see how intense and focused he is while he's fuc- treating you. And you can watch his thing go in and out... don't you like it?"

"I do! It feels soo good!" Alexa says and you speed up your thrusts, fucking her more forcefully and causing her to moan even more. A few more strokes and Alexa shrieks and throws her head back in pleasure as she cums on your cock. You want to continue fucking her until you cum too, but Kendra reaches forward to put a hand on your chest to stop you. You hold your stance and look at Kendra, curious why she stopped you.

"Don't cum yet," Kendra mouths silently at you. She then turns to Alexa and pecks her on the cheek. "How are you feeling? Feeling better?" she asks her.

"Uh huh... So much better..." Alexa mumbles in a haze.

"Good, I'm going to get my treatment from the doctor now. Why don't you go watch some tv or hang out by the pool, okay? Thank the doctor," Kendra instructs Alexa.

"Thank you, doctor!" Alexa says cheerfully and you nod and step back, pulling your cock out of her. Alexa get gets up and leaves the room.