Voyeurism and a helping hand

Thinking about it in your head it makes the most sense to go for Heather first. You like her, you've not seen her awake yet so she's probably in her room and you don't wanna get Charlie up first. Plus Sam is acting weird, Bella is probably still showering, and Lucy is well... You have no clue. Of course you need to get your parents but after yesterday you don't want to do that alone. Even if mom's jugs are big enough to suffocate me to stop me from seeing.

You walk mindlessly with a grin on your face, your cock stirring but not getting fully hard, as you imagine playing with your mom's giant tits with your hands, mouth and everything in between. You arrive at Heather's door without realising. It's open already, a crack big enough to peer through without being seen obviously. The sounds coming through are not the kind you want to be hearing, at least not without you being involved.

Wet slaps, heavy moans, throaty grunts, and a sexual cry from Heather. "YES! YES! YES! Oh fuck me. You're filling me up! Holy shit Charlie! Fill my fucking cunt with your giant cock!" Without even looking you can tell what's going on. Part of you wants to leave while another part wants to know whats happening. Your cock hardens more as Heather's moans continue.

It's fine. It's just like porn, except with no screen, and people I know, and a risk of being caught. Damn this is kinda exciting! Not like you're gonna jerk off to Charlie pounding a girl, even if that girl is really hot. You finally peek through the crack and into the room, spying the two naked people you expected.

Charlie holds Heather's legs in the air as he thrusts his cock into her sloppy wet cunt. You can't see it from here but you can tell she's more than wet from the amount of sound emitting from their thrusts. He gropes her handful sized tits roughly as her body shakes from his constant pounding. "Fuck I'm CUMMING AG-AIN!" Heather cries out.

Her back arches across the bed as Charlie pays no attention mind to her shifting position and continues to thrust roughly with heavy pants and grunts. Lucy's fruity smell fills the air as a hand snakes it's way onto your hard cock while two large boobs squish against your back. You almost yell out in shock, controlling yourself at the last second. "Watching something juicy I see brother." She whispers.

"N-no I just... stumbled upon them like this..." She rubs her hand over your contained member. "And then I stayed for a bit longer. F-for research purposes clearly." You keep your voice low and hissed as she continues to rub you awkwardly through your thick jeans.

"It's okay brother. I'm only here to help." Lucy reaches round and unbuttons and unzips your jeans to pull them down. Your hard cock flops out, precum dribbling from the tip already. She slowly and gently begins to stroke your length as she smears the precum with her small hands. "Now you just enjoy the scene and let your little sister take care of everything."

Back in the room Charlie pulls his cock out of Heather's pussy and flips her onto her belly. "On your hands and knees slut." He orders. She's panting but complies, her head hanging down between her arms as she does. Charlie lines up his cock against her pussy once more, this time you can see the size of his length. He's about the same size as you, although it's hard to tell from the distance to the bed they're on.

Grabbing a handful of her hair, he yanks her head back up and grunts. "Take this cock, slut. You fucking like it rough, it makes you drip when I take over." He slams his whole length deep inside her wet folds. Her mouth hangs open as a slew of sensual grunts come out with each hard thrust from his cock that he takes.

All the while Lucy has been jerking your cock. At some point she knelt down in front of you and drooled over your length to give it some lubrication. She watches your face the entire time. "Yes brother. Watch that slut get fucking used. You don't need a useless cunt like that on this cock, you only need your sister and her love. Just watch her get railed and let your loving sister make you feel good." She slides her supple lips around your cock and taking you halfway down while still using one hand to pump your shaft. Your eyes focus back to the room.

Charlie lets go of Heather's hair as she convulses in another orgasm. Her arms go limp, unable to hold her own weight as she slumps face first into the bed. Her loud moans muffled but still easily heard from out in the hall. Both of his hands land on her hips as he drives his cock in hard and fast, his whole body covered in sweat from keeping such a vigorous pace the entire time. He gives her heart-shaped ass a firm smack. She shakes on his cock, cumming again.

"Yeah slut I'm gonna cum." Charlie grunts as he quickly and suddenly pulls his cock out from her dripping cunt. "You thirsty cause I've got a lot saved up." She weakly turns around on her hands and knees and wraps her full lips around his head, still slick with her own juices. He grabs the back of her head and pulls her all the way down his shaft, much gentler than you were expecting. You feel a similar sensation on your own cock and quickly peek down to see Lucy deepthroating your throbbing cock.

Heather gags loudly as she is **** to swallow Charlie's cock which he drives into her throat. She's playing with her pussy with one hand as he picks up the pace, getting closer to his own orgasm finally. You feel yours arriving with Lucy seemingly matching the pace inside the room. "Here it comes slut. Get ready to swallow it all this time. We don't want to make a mess on Michael's bed." Heather seems to hesitate for a moment which Charlie doesn't appreciate at all. He forces her head all the way down and groans loudly as he grinds his pelvis against her face.

At your limit from the hot sight and your little sister's oral skills you cum without warning, into the willing mouth of Lucy who happily swallows every drop once again. The same can't be said for Heather who feebly attempts to push herself off Charlie's meat. With an obnoxiously loud and satisfied sigh he eventually releases her head. She falls back in a coughing fit as cum and spit dribble down her mouth and onto her tits. "F-u-c-k. Y-o-u." Heather coughs out as she wipes his cum from her chin.