You go home tired, and Shelly greets you like a proper sister. (Blowjob)

School's finally over, and you took the first bus ride home.

Walking up to the front of your house, you reached out to open the front door, only for someone to already pull it open for you.

"Welcome home, little brother!" Shelly cheerfully greeted you, pulling you in for a hug as she smushes your face in her boobs.

You're starting to think that she's doing this on purpose to deliberately **** you get a hard on.

Still not use to her new overly affectionate personality, you gently pushed her away, "Yes, hello Shelly."

Walking in, you lay your backpack on the floor before laying back on the sofa, completely tired and bored. Well, semi-bored. Too many weird things keep happening today for you to consider this a truly boring and average day.

Shelly decided to sit next to you, scooching her butt closer until she was practically rubbing up against you. Then she laid her head on your shoulder, and whispered in a seductive tone, "Mom's not home yet... Want me to suck your cock again?"

With her bluntly coming out and asking for it so casually, you couldn't help but feel your pants tighten again as another erection threaten to rise.

Remembering the pleasure you felt this morning, you were tempted. You were REALLY tempted to go at it again. The blowjob you had was pretty much the only sexual act you've ever engaged in in your entire life, so you wouldn't mind getting another.

But... It was still your sister...

Eugh...

Why couldn't your sister not be your sister?! If she wasn't related to you by blood, this would have been so much easier to decide.

...

"Fine... Just- do it quick..." You muttered, unzipping your pants and freeing your cock out.

Your sister excitedly grin, before leaning down to swallow your dick whole again. She gave a lewd moan as she **** your cock in her tight throat, the vibrations making you shudder in your seat.

Right as she was about to bob her head- Someone opens the front door and calls out, "Kids, I'm home!"

With the fastest reflex you ever seen in your entire life, your sister immediately pulled out and turned on the TV to pretend that you were both watching a movie.

It took you a whole second or two to get your thick skull to comprehend that your mother was home and was actually in the house.

Realizing your rigid hard cock was still out in the open, you tried to quickly zip your pants back up in a panic, only to hiss as you accidently got your cock stuck inbetween the zipper.

"Hurry up and put it away! Mom's home!" Shelly hissed at you.

"I can't! It's too erect to push down! I can't zip it back up!" You whispered back.

"Oh for the love of-" Shelly rolled her eyes, before repositioning herself to lay her entire body on the sofa and laid her head down on top of your cock to hide it from Mom's view.

"What are you doing?! There's no way that's gonna work-" you began to warn her, but stopped when you heard your mom walk up from behind you.

"Oh, well isn't this a rare sight. Two of my angels snuggled up together while watching cartoons." She giggled in pleasant surprise, petting your head, "I haven't seen you two act this close since back when you were just tiny kids. It's nice to see you like this again."

"Welcome back mom!" Shelly greeted her in a casual nonchalant voice.

"Uh-ah-Yeah. Hi mom!" You stammered, not as good at keeping up your poker face like Shelly. Doesn't help that Shelly was breathing right on top of your erection.

Thankfully, Mom doesn't notice and kissed your head, "Don't forget to finish your homework! I'm gonna whip up something special for tonight!"

Once she headed to the kitchen, you relaxed your breath, "Holy shit, that was a close one-"

You interrupted yourself with a pleasant moan, feeling Shelly going back to impaling your cock down her throat.

"Shelly! What are you doing?! You're gonna risk Mom seeing us like this!"

Shelly glanced at you with a wink, before ignoring you to focus on sucking your cock.

You covered your mouth to avoid making as much noise as possible, the pleasure overwhelming you as you felt your rod get massaged by your sister's tight throat again for the second time today.

The fact that your mom was only a couple feet away from you as she worked in the kitchen, and there was a very high risk of the both of you getting caught any second, actually heightened the experience two times over.

Shelly lapped her tongue around the tip of your cock to suck up all the precum, before going straight back down to deepthroat your cock to oblivion.

As much as you wanted to make this moment last longer, you really really really didn't want mom to catch you. So you had **** but to grab the back of your sister's head and **** her to go faster.

You thrusted your pelvis up each time you pushed her head down, roughly fucking her face like it was nothing more than some sort of human-shaped fleshlight.

Proving once again how twistedly kinky she was, she seemed to enjoy having her head manhandled and embraced her role as a sex toy, already fingering herself through her own unzipped pants.

With how quickly your cock was thrusting in and out of her mouth, you eventually reach your boiling point and released your semen down her throat again, just like this morning.

You held your mouth shut as you lurched back, suppressing your scream to nothing more than a muffled whimper.

Shelly was too busy gulping down your cum to make any noise for herself, savoring the taste as she continued to masturbate on the sofa.

Feeling relieved once more, you skipped the part about basking in any orgasm after glows and tried to remove Shelly's head off of your cock.

To your surprise, she refused to move, clamping her lips shut as she tried to suck more cum out of you. You tried moving her head again, almost faltering as you felt your empty cock getting over-pleasured by her mouth. You had no more cum left in your reserves, however, so it started to feeling kinda painful to have her continue sucking you dry after you already climaxed.

Then, Shelly stopped sucking, before her body began spasming violently and her screech getting muffled from her mouth covering your cock. You saw a geyser of liquid violently shoot out from inside her pants and covering the carpet, making it drenched in her orgasm juice.

"Did you say something John?" Mom called out.

"No, just chuckling at the cartoons, Mom!" You lied on the spot, feeling your heart jump to your throat.

"Oh okay."

After that, Shelly finally calmed down, her entire body going limp on top of you.

You shove her off your cock and quickly zipped yourself back up, the went to snapping your sister out of her post-orgasm coma.

Despite being so nearby, your mom didn't notice a thing, thankfully. Hopefully, she doesn't come over to the sofa anytime soon and smell the sex permeating the air nearby, or feel the wet spot on the carpet where Shelly came all over.

Recovering from her orgasm, both you and your sister cleaned yourself up before dinner was ready.

Dinner was the only honestly normal part of the day, as you all sat still and ate your fried chicken in silence, with your sister not once making another attempt to sex you again after. Then, it was finally night time.

God, you desperately needed the sleep. Your sister was going to drive you insane if she kept this up.

You crashed your head to your pillow, and you were instantly out like a light.