We got the family suite at the Disney resort because Dad wanted everyone together for the week. Mom and Dad took the master bedroom. My sister Emily and I got the two queen beds in the big room with the pullout couch. She was twenty-two, just like me, both of us home from college for the break. The first night after the parks we were beat, but the second night the parents went out for drinks and left us alone.
Emily stripped down to her panties right in front of me like it was nothing. “It’s hot as fuck in here,” she said, flopping onto her bed. Her tits bounced, nipples already hard. I felt my cock twitch in my shorts. We’d always been close, but this was different. The air felt thick.
I yanked my shirt off. “You’re really just gonna lay there like that?”
She smirked and spread her legs a little. “What, you gonna stare or you gonna do something about it?”
I crossed the room in two steps and grabbed her ankle, pulling her to the edge of the bed. “You’ve been teasing me all day in those tiny shorts.” I shoved her panties aside and dragged two fingers through her wet slit. She was soaked. “Fuck, you’re dripping already.”
Emily moaned and pushed her hips up. “Been thinking about your cock since we got here. Don’t be gentle.”
I dropped my shorts and kicked them away. My dick slapped against her thigh, thick and hard. I rubbed the head up and down her pussy, coating it in her juice, then slammed in balls-deep in one thrust. She gasped and clawed at the sheets. “Yes, fuck, give it to me.”
I fucked her hard and fast, the bed creaking under us. Skin slapped loud. Her tits bounced with every stroke. I leaned down and sucked one nipple into my mouth, biting just enough to make her yelp. “You like your brother’s cock stretching your cunt?” I growled against her skin.
“God yes, harder,” she begged, wrapping her legs around my waist. I pounded her until she came, pussy clamping down and squirting a little around my shaft. I didn’t stop. I flipped her onto her stomach, yanked her hips up, and drove back in from behind. My balls slapped her clit with every thrust. I reached around and rubbed her swollen nub until she came again, screaming into the pillow.
We heard the parents’ key in the door.

We didn’t stop. I just pulled the blanket half over us and kept fucking her slow and deep while they stumbled in drunk and went straight to their room. Emily bit the pillow to stay quiet as I filled her up, pumping thick ropes of cum deep inside her.
The rest of the vacation was the same. Morning blowjobs in the shower while Mom made breakfast. Quickies in the bathroom at the parks. Emily riding me reverse cowgirl on the hotel couch at night after the parents passed out. We didn’t talk about it. We just kept fucking like animals every chance we got, raw and nasty, until checkout day when she let me cum down her throat one last time before we drove home.