Step into the shower

I strip in the bathroom quickly and step to the shower door. As I slide it back, I see it is indeed Samantha. She gasps to see me stepping into the shower. Her body is flushed from the hot water and her excitement. Her breasts are big, probably C-cups, and her nipples are fat and crinkled. She shaves her pussy. Her hair cascades over her shoulders and ends just above her tits. She looks surprised, but her gaze lowers to my stiff cock, and a smile crosses her lips.

"Taking a walk on the wild side, Dan?" she says, her voice low and seductive.

"Your sister is fucking the teen hunk, so I thought I'd see who was up." I make a point of gazing up and down her body and then back to her eyes.

She puts the showerhead back in the bracket and steps toward me, putting her arms around my neck. She quickly glances down and then back up to my eyes, and then she says, "It looks like you're up."

I pull her head closer and kiss her, my other hand wrapping around her body and squeezing her ass. She's the first to push her tongue into my mouth. She tastes sweet from ****. I startle a bit when she firmly grabs my cock.

After another minute of making out, I break the kiss and push her against the wall.

"So you want to fuck your sister-in-law? Naughty boy. I love naughty boys," she says with a growl as she pulls my hips toward her, making me step between her legs.

"I've been curious about what it would be like ever since you spied on Meg and me in high school," I say. Sam looks surprised, so I say, "You didn't know I knew? I would whisper to Meg that you were watching, and we would go extra hard to show off."

Samantha looks at me with lust in her eyes and then pulls me in for another French kiss. My cock rubs on her mound as we kiss. I massage her mounds, lightly twisting her nipples. She breaks the kiss and moans out loud.

"Ever since then I've lusted for you. I wanted to be on the receiving end of your delicious cock. Fuck me, Dan. Imagine we're in high school and Meg is watching." She resumes the kiss as she strokes my meat and pulls it toward her hot sex.

I shift to let her push the head inside her slick hungry cunt. Then I grab her hips and thrust hard forward, filling her and bottoming out, balls deep. We both grunt loudly.

"Oh, Dan. Your cock feels good."

"I can't believe we're doing this. Your pussy is so hot!" I start thrusting in and out, and I lean in and nibble her ear.

The feeling of Sam's hands on my back, her breath in my ear, my cock inside her, and her body pressed against me is amazing.

"I used to frig myself to sleep when you stayed over with Meg, thinking it was you pounding me into the mattress. I wanted to sneak into the shower with you, but I could never get up the nerve," Sam whispers in my ear.

As I drill her against the wall, I say in her ear, "I used to fantasize having a threesome with you and Meg. Me fucking you from behind while you licked my cum out of your sister."

My sister-in-law moans loudly, wrapping her long legs around my waist. She uses her heels to speed my thrusts up. "Oh, my God, Dan! That's so hot and nasty!" Her body shudders in a preliminary orgasm, just a little something to start.

I concentrate on hitting every part of her cunt, shifting my hips and my angle for her pleasure. Sam shrieks and moans as we fuck, her pussy squeezing my cock when I am deepest inside her.

"Oh, Dan! I'm gonna cum on your cock. Oh, shit! Fill me. I wanna feel your heat inside me!" Sam growls.

I speed up. Her body starts shaking like a tree in the wind, and I can feel her pussy pulsing around my meat. Her voice sings out her climax, rising and falling as she comes. I explode inside her, every time I bottom out. Cumming in her passionate body is wonderful. "Take it, Sam. Take my jizz." I capture her lips in a deep kiss as we rut. She screams in my mouth.

After a minute of wild mutual orgasm, I slump against her, my cock slipping from her overheated depths. She sets her feet on the floor and we both pant in the other's ear. After a minute, I whisper, "I could get used to this."

"So could I," she replies.