Why not?

You spend the Uber ride thinking about what’s going to happen to you. You do genuinely think it’ll be fun, all the attention Katie, Andrea and Tess have paid to your ass has generally felt good. Katie smiles at you and squeezes your thigh a few times. Andrea looks giddy, each bump the Uber driver hits causes her massive rack to shake. Katie kisses your ear and whispers that it’s going to be fun into it. Andrea pulls out her phone to pass some of the time. Your phone goes off and you check it. It’s from Tess.

Tess: Is it happening?

You: I think so. I’m nervous excited.

Tess: I’m sad I can’t be there. Andrea will make it fun for you though.

You: I hope so.

Tess: I’ll kiss it later if she hurts you.

You: thanks.

Tess sends you a picture from her dorm room. She’s on her back with her legs spread, shoving the rubber copy of your dick into her slit.

The Uber arrives at Andrea’s house and you follow her inside, Katie trailing behind you. You walk in and Andrea kicks off her shoes and grabs drinks for everyone. She distributes the drinks and grins.

“Take a drink and a smoke stud while I get ready.” Andrea chuckles, “Maybe Katie will help.”

Andrea disappears into her bedroom. You and Katie slip out onto her back porch and light up.

“Still okay with this?” Katie asks, “You don’t have to.”

“It might be fun to try.” you say, “I can always ask her to stop.”

“True.” Katie grins, “I’m glad we’re trying new things. But it’s in such a weird way. But let me help you get ready.”

Katie wordlessly strips off her top, her small chest was unsupported underneath it. Your girlfriend slowly unbuttons your shirt, pulling it off and casting it aside. She looks at you lovingly before unfastening your pants and slipping a small hand inside. You drop your pants and step out of them. Katie keeps one hand on your cock and steps around behind you. Slowly sinking to her knees on the deck. Your amazing girlfriend starts to rim you out. She knows how you like it. The booze is helping you both relax. You relax and let the sensations of Katie’s rimjob and handjob wash over you. Katie is amazing right now, she’s licking and slurping your ass with her older sisters skill and her younger sisters enthusiasm. Katie gets you nice and sloppy before slurping up one last time.

“Are you ready baby?” she purrs.

You swallow hard. This is the point of no return, you nod. Katie smiles and takes your hand, leading you inside. Katie steps inside Andrea’s bedroom and you follow. Katie gestures you to lay down. You do and watch Katie quickly strip off her jeans and panties. She giggles and teases herself with her fingers. With her other hand she gently strokes your cock. Katie gently kisses the top and swirls her tongue over you. You let out a small gasping moan. Then you hear the attached bathroom door open.

Andrea walks through the door. The voluptuous brunette is naked, her large tits bouncing, her thick thighs jiggling. Between her legs hangs her strap on. Thankfully it’s small you notice. You breathe a sigh of relief. Andrea smiles at you and gently takes over stroking you from Katie’s hand.

“It’s not big. I want this to be fun for you.” Andrea whispers, “I see Katie started getting you ready. Let me finish.”

Andrea sinks to her knees and slowly, teasingly starts to lick. She’s quickly up to speed and teasing you with a finger. You start to squirm and moan, your body unsure about what’s happening. Slowly Andrea rises up and climbs over you on the bed. Her thick arms on either side of you supporting her. You feel the cool slick wetness of the firm rubber touching you lightly. You take Andrea’s big soft jugs into your hands. She moans quietly and shakes her chest at you.

“Are you ready hot stuff?” Andrea asks you, “Point of no return.”

“Yes. I’m ready to try.” you answer quietly.

With that Andrea gently grabs your legs to help you open them. You look at Katie and your girlfriend mouths ‘have fun’ at you. Andrea looks you in the eye and slowly starts to push. Your eyes open and you gasp. It’s much more intense than you thought. It feels like her finger but a thousand times more. You start panting as she slips in further. This feeling is almost indescribable, your girlfriends busty sister is slowly fucking your ass. You moan and groan as Andrea moves relentlessly, establishing a good rhythm.

“How is it baby?” Katie asks you.

“Fuck it’s intense.” you moan, “I can’t describe it.”

“Do you like it?” Andrea asks breathing hard.

“I think so.” you admit. You’re not really sure. You’re as hard as you’ve ever been. The feeling is like a rimjob but more. It’s like having it all at once. Andrea is working the strap on inside you. Wiggling it and hitting hot spots that make you jump. You’re afraid to jump too much, being filled like this is an odd sensation for you. Andrea wraps her hand around your cock and strokes it while slowly and firmly pumping inside you.

“Oh that’s good Andrea.” you moan, “Stroke it.”

“I still love your huge cock.” Andrea pants, “Also your tight ass. This is more fun than eating it. Although I will always do that. You’ve made me and my sisters into your sluts.”

“Not right now.” you pant, squirming.

“Oh still now.” Andrea pants, “This big fucking dick. If you told me to stop right now and suck it I would. You fucking own me.”

“Me too.” Katie moans from next to you. You see that she’s fingering herself hard at seeing Andrea fuck you, “You own me. You know I’ll do anything you ask.”

Hearing these two say that makes you feel even better about this weird new world you’re living in. Three sisters that love your cock. At least Two that will indulge in ass play with you. The feeling is very pleasurable, you think you could get off like this. But you’d still like to exert some control.

“Well one of you fucking suck it.” you groan, “I can’t just lay here.”

Katie quickly springs into action. Your slim girlfriend scrambles up and throws one of her slender thighs over your head. She lowers her beautifully waxed pussy into your face. You start to lick and tease your girlfriend and she quickly takes you into her mouth.

You groan and squirm as Andrea pistons your tight ass. Your balls are twitching. Katie is throating you like a mad woman upside down. She’s also grinding her hips on your face as you expertly guide her to the edge. Katie clenches and relaxes as you push her over the edge with your tongue. Andrea starts going even faster now. You’re not sure where you are as the waves wash over you. Katie is powerfully sucking your tip and stroking the base. Andrea gasps, the rubbing of the strap has pushed her to the edge.

“Oh fuck.” Andrea gasps, “Fucking you like this is gonna make me cum! You’d better be close. Katie suck his fucking soul out through his dick.”

Katie takes her sisters words to heart and starts giving you the upside down blowjob of her life. She’s sucking and stroking and moaning with reckless abandon. Andrea is hitting the spot in your ass. The combination of all this causes you to have the new most powerful orgasm of your life. It feels like all your cum erupts at once. Causing Katie to **** on it and cough, some coming out her nose. Andrea collapses down on top of Katie’s back as she reaches her own peak as well. You had managed to tongue Katie over the edge once more and you all collapse in a big naked heap.