It was 1 A.M. and I was about to go to sleep but first I decided I was going to jack-off. I was home from college for summer break and it seemed in the only time I had to myself was in the middle of the night. My 19 year old sister and my parents seemed to constantly be knocking on my door asking various things. I pulled off my pants and boxers and sat at my computer. I turned on some porn and started stroking my cock as it stiffened to its 8 inch length. Normally, I close and lock my door while I'm masturbating, but tonight I had forgotten. I had left my door wide open and worst of all, I didn't even notice until it was too late.
I was quickly stroking the shaft of my cock as I watched the couple fucking on my monitor. My hands pumped up and down from the base of my dick to the top of my head. I sped up even faster as I came closer to cumming. I let out a groan and blew my load onto the hardwood floor. That's when I heard a noise from the doorway. I quickly turned to see my sister Kathy staring at me. I froze, still gripping my cock as it immediately became softer. We sat in silence for what seemed like forever until my sister took a step into my room.
"Hi." Kathy said as she took a few more steps into my room.
That's when I noticed she wasn't looking at me, but staring at my cock. "H-hi..." I was feeling uncomfortable, yet couldn't get myself to move, not even to cover myself up.
Kathy stopped right in front of me. Her eyes finally moved away from my cock as she glanced at my face and smiled at me. She kneeled down between my legs and moved my hand away from my cock. Our eyes were locked as she stuck out her tongue and began licking the tip of my cock, making it harder. She licked it a few more times before sticking it in her mouth, massaging the shaft with her tongue as it grew larger and harder. Kathy began to slowly bob her head back and forth, pulling on my cock with just her mouth until I was fully hard. She steadily began picking up pace, her lips tightly locked around my 8 inch pole. Her nose pushed against my body. My entire cock was in her mouth, a good portion was even buried in her throat. I expected her to gag but she didn't even blink. She kept her eyes locked onto mine as she moved her throat side to side with my cock buried inside it. Kathy pulled back, taking in a large breathe of air before shoving my cock right back into her throat again. I placed my hand on the back of her head and pushed her head harder into my cock, only letting go so she could get a breath of air. After getting settled into the groove of the skull fucking I was giving her, she began to massage my balls with her two free hands. My head continuously hit and grinded against the back of my sister's throat as I pushed her head faster and harder onto me. I felt myself about to cum, so I let her get one last good breath and then pushed my cock into her throat as hard and as far as I could and then released my load directly down her throat. My cum blasted the walls of her throat and she tried to keep up and swallow it all. I slouched in my chair as my sister coughs up a bit of cum. A stream of my cum dripped down the corner of her mouth, but she quickly licked it up.
My sister swallowed the last of my cum, looked up at me and smiled. "I'm so glad you left the door open this time. I was always disappointed when you locked the door and kept me out of the fun."
"Well, I'll be sure to leave the door unlocked more often."
"Oh, the fun's far from over." Kathy stands up and begins to rhythmically move from side to side as she slowly takes off her shirt, leaving her only wearing a black lace bra and a pair of boxers on. She continued her striptease and removed her bra, revealing her perfectly beautiful 38C tits. My cock quickly came back to life again as she caressed her tits then moved her hands down her stomach and began to remove her pink boxer shorts. Kathy turned away from me as she pulled her shorts down, giving me a perfect view of her ass. She kept her ass high in the air as she pulled her shorts down around her ankles. Still bending down, she began to tease her clit, smiling at me from between her legs. She began to moan as she inserted one of her fingers into her pussy while still teasing her clit.
"Are you going to keep me waiting?" She says.
"Of course not." I stood up and walked over to Kathy. She removed her finger from her pussy and I inserted two of my fingers. I slowly pushed them deep inside her then pulled them out, repeating this action several times. I dragged my tongue along her ass cheeks, slowly getting closer to her asshole until I finally drive my whole tongue into her ass. Kathy moans as I twirled my tongue all around inside of her ass while still fingering her pussy. I stood up and placed the tip of my cock on her pussy, teasing her before plunging all 8 inches of my cock into her cunt. She let out a sharp gasp. I took my entire cock out of her pussy before shoving it all back in again. Our bodies smack together as I completely remove and reinsert my cock into and out of her cunt several times, making her gasp each time. Kathy's gasps become moans and her moans get louder and louder as I continue to pound into her as hard as I can. Just when I think she couldn't handle it anymore, she raises her ass up even higher by grabbing onto her ankles. I ferociously fuck her cunt some more, but I begin to feel myself about to cum.
"I'm gonna cum!" I said.
"Do it in my ass! Fuck me as hard as you can and cum in my ass!"
I took my cock out of her pussy and placed the tip on the rim of her ass, giving myself a little time so I wouldn't instantly cum in her. I slowly push the head of my cock into her ass and leave it there for just a moment before thrusting my cock deep into her ass. I tightly grabbed onto her tits and groped them furiously as I pummeled her ass. She lets out a howl as my cock drives deep into and out of her anus. Our bodies slammed against each other with each and every thrust, my balls loudly slap against her cunt. Kathy managed to get a few of her fingers into her pussy and began to fingerfuck herself as I kept violently fucking her ass. Her legs started to shake. Her knees began to buckle. I knew she was about to cum, which was good because I knew I wasn't going to last much longer myself.
"I- I- I- I'm going to cum!" Kathy barely manages to get the words out between her heavy gasping and moaning.
About to climax and tired to the point of exhaustion, I nestled my cock deep inside her ass. Cum explodes out of my cock and drains deep into her anal cavity. Kathy orgasmed as well. Her legs gave out and she collapsed onto the floor, which causes me to fall on top of her. We both climbed up onto my nearby bed and just laid on it, exhausted, sweaty, and out of breathe. We were both so exhausted, we fell asleep as we were, forgetting our parents were asleep upstairs. Thankfully, however, I woke up two hours later.
I got out of bed and put my boxers back on. I was about to wake my sister up but I became captivated by her naked body. I found my cock getting hard again. It was even harder than before. I wanted to wake her up so we could fuck again, so I ripped off my boxers and climbed to the foot of the bed and began to lick around my sister's pussy. I flicked her clit with my tongue before I started sucking on it. Kathy began to stir around, but she didn't wake up. I slipped my tongue into her pussy and began to slowly eat her out. I sped up my tongue fucking and her moans got louder but she still didn't wake up.
"I must have really tired you out..." I drove as much tongue as I could into her cunt and ate her out as fast as I possibly could. I reached up to her breasts and began teasing her nipples. Her pussy was getting wetter and wetter. Her moans became more vocal. She writhed more and more in pleasure all while staying asleep. I tongue fucked her for so long my tongue and jaw was getting tired. That's when I felt her cum. She came in her sleep... Well hell, if she gets to have another orgasm, I'll have another as well I thought.
I climbed up on top of her and lined my cock up to her pussy. I gently slid my cock in and begin to pump it in and out of her wet cunt as she slept. I slowly and rhythmically pushed in and out of her, getting as much pleasure as I could with each passing. I sucked and nibbled on my sister's nipples while fucking her in her sleep. Suddenly I noticed she had both of her hands on my ass, squeezing tight.
