Clean up

I couldn't help thrusting into my sister's mouth at the feel of her lips sliding over the tip of my dick. I quickly brought my hands her head to try to pull her off, but she plunged nearly all the way down, and instead I couldn't help but push her onto me even harder, making a slight gagging sound as I hit the back of her throat. The second I regained control and tried to pull her back again, she started rapidly blowing me, groaning sexily at the top of each thrust and giving off a wet glucking sound at the bottom. I halfheartedly tried to get her off me again, but her mouth felt too good, and it just ended up with me resting my hands on her head as I tensed up, involuntarily thrusting into her mouth. Suddenly, she pulled back off me and began jerking my twitching dick, pointing me at her chest. I tensed and began shooting shot after shot of cum all over her as she moaned, most of my cum landing on her outthrust tits, but a few stray shots hitting her in the face or staining her bunched up dress.

"Oh my god sis," I finally manged to gasp as I got my breath back.

"We good now?" she asked in a tone of voice I had never hard from her before. She wiped some of my jizz off a breast and made a show of slowly licking it, enjoying the taste.

"Good?" I replied, still confused at having my sister, whom admittedly I had had a few fantasies about as we got older, but whom had never been anything other than sisterly with me, and recently had been more of a bitch than anything else, stripping and then forcing me to let her jerk me off and then blow me, before intentionally having me cover her front with my cum, as if this were some **** porno.

"Cleaning up the room," she prompted, gesturing at the messy living room, uncaring of her naked and cum-covered boobs.

"Cleaning?" I asked, still confused, not moving or even pulling up my pants.

"Fine. Fine, alright?" she yelled, waving her arms angrily and setting her cum-covered chest shaking enticingly. "FINE I'll help! Are you fucking happy?" she added angrily standing up, stamping her feet. My eyes followed her boobs as her violent motions shook the cum off somehow. She pulled her dress up and shoved her arms back through the straps, cupping her breasts again to get them seated in the tight top again, completely clean and showing no sign of what had just happened. "Get your lazy ass up and help then, if you keep insisting!" she added, pulling me to my feet, pulling my pants up and zipping them over my dick, and pushing me towards the pile of pizza boxes. I stumbled and reached down to adjust my pants, expecting there to be sticky mess in my pants, but everything felt fine.

"Well? I'm helping now, so move your ass," she commented, as the vacuum clicked on. I numbly went over and picked up the pizza boxes and headed outside to the bins.

"Finally," Amy commented, sitting down heavily on the couch about an hour later. The room was all leaned up; you couldn't tell it had been a wreck so recently. I had spent the time in a mix of stewing over what had happened, and trying to talk to my sister, but she only had time to bark orders at me. "Alright fine, I get why you wouldn't do it by yourself," she said. "I guess you aren't THAT lazy of an ass."

"Sis, about before..." I tried to say again, sitting down next to her.

"Yeah, shit, I need it after all that," she said.

"Need wha... THE FUCK!" I tried to get out, as she straddled me and somehow fished my dick out of my pants and rubbed the tip on her lower lips before I could even register her movement. She moaned and thrust her pussy onto me, her dress preventing me from seeing her cunt slide onto my dick, but the tight and wet sensation enveloping my entire length, smack of flesh on flesh, and her moan indicated she had taken me fully inside her in one movement.

"Fuck yeah, bro! You like that pussy?" she cried as she began to ride me, pulling my hands up to fondle her tits through her dress.

I tried to respond, but found that all I could do was groan as she fucked up and down on my hard dick, my hands almost involuntarily kneading her large, firm breasts through the soft cloth of her dress.