All straight sex in this one. I enjoyed writing this, one of my fun stories that lives in it's own realities when it comes to the mentioned medical stuff. Very much one of my fantasy (aren't they all) stories.
I was almost done with my chores. I had two floors to vacuum then I'd relax by watching porn on my phone while I jerked off in our spacious jacuzzi bath. I was single, back living at home while I waited 8 more months to switch schools. I'd gone to a year of college, decided it wasn't for me and had enrolled the next year in a local technical school instead. I kept myself in shape, I loved to cycle and run cross country but wasn't in any groups or anything with it, I just liked to stay fit.
I had my noise cancelling headphones in, jamming away to my music as I cleaned when suddenly the vacuum quit on me. I had loose cord in my hand so I knew I hadn't pulled the plug but I turned around to see my stepsister holding the plug in her hand, her mouth open as she stared at my cock. Oh, I should probably add that all I was wearing (besides the headphones) was a pair of white, lace, boy short style panties that felt amazing on my shaved balls and usually had me hard the whole time I did my chores. I wasn't gay or anything, I just loved how they felt and how naughty they made me feel when I wore them underneath regular clothes in public.
"What, the fuck Marcus?" said Amber, my stepsister.
"Why are you home, you're supposed to be in class," I replied as I took my headphones off.
"We lost power so they closed us for the day, who.... who's panties are they, why are you naked? Are you some kind of pervert or something?"
"I'm not naked and it doesn't matter, they're not yours. I like to wear them, it excites me."
Amber didn't say anything for what felt like forever, I'm sure it was less than 30 seconds but I felt trapped.
"Does Dad know?" she said, calmly.
"Sure, yea, we talk about it all the fucking time. What do you think?" I replied, I was getting a little annoyed at her.
"You're going to do something for me or I tell him."
"What."
"You're going to eat my pussy."
"You... you're my sister, Amber."
"Step sister. Doesn't stop you staring at my tits when I wear anything other than a hoodie. Decide fast, we have about an hour."
"Fine."
My protest was just for appearances. Secretly my cock throbbed at the prospect and in my head I yelled 'oh fuck yes please'. Amber was hot as hell, very slim blonde with a beautiful pair of 36c's (I looked at her bra label in the laundry) but was a bit of a bitch which kept her single most of the time. She was just a year older than me too but we barely got along and fought most of the 6 years our parents had been married.
I followed her to her room where she pulled her panties down and kicked them off then stood beside her bed.
"Get on the bed, you're not controlling this," she said. I just did as she asked.
She was wearing a short, tennis style shirt that she only took off when she straddled my head. I got a brief look at a very nice, shaved pussy before she lowered it to my mouth. I loved eating pussy, a girl I was seeing for a while in my brief stint in college taught me how to do it well and I found being able to get her off well, often led to her wanting to please me more and I always saw as a winning situation. Amber was already wet, my tongue slipped inside her with ease and I started to explore her, taste her juices and find her pleasure buttons. She was soon moaning in pleasure; I had her pretty much grinding her pussy on my tongue and I loved it. When I focused my hardened tongue on her clit she let out an 'Oooohhh' and was mumbling obscenities as her breathing got heavier. The first time she climaxed almost caught her off guard, she tried to pull away from me but I reached up and held on to her thighs and licked harder. By the time I finally let her go she'd cum at least 3 times and was twitching and shaking on the bed when she collapsed beside me.
"Y... You're fucking good at that..." she gasped as she caught her breath. I just grinned at her.
She looked down at my cock but didn't say anything, she reached into the panties I was still wearing and started stroking me.
"Y.. you didn't hesitate or resist very much to this," she said softly.
"Well maybe I've wanted it for ages," I replied.
"Really?"
"Yes, Amber, despite your often frosty nature you're hot as hell."
"Maybe my frosty is to keep the letches and assholes away."
"Well, I live here so I'm stuck here with you, sorry." She smiled at me.
"I kind of want this but I want to enjoy you, cum in my mouth for now?"
"I would enjoy that."
Amber leaned down and took my cock into her mouth, it felt amazing and she really knew how to please. I didn't last long but she didn't care, she sucked me until I came and swallowed every drop.
"A quick sample then we have to get cleaned up," she said then mounted me.
She took my cock inside her, right to the hilt then kissed me, traces of my own cum still on her tongue. I could have stayed there for days but she was right, we didn't have time. She groaned as she got off me and helped me to my feet.
I think I was smiling the whole time I showered, I quickly finished off my chores and was just putting the vacuum away when my stepmom, Vicki, arrived home.
"You're just now finishing?" she asked.
"No, just forgot to put this away," I replied as I looked down.
"Look at me," she said quietly.
I did as she asked.
"I know you didn't have a choice. Did you make her cum?" she asked.
"Yes, Mistress," I replied.
"Did you cum inside her?"
"Her mouth, Mistress."
"I'll send her to get my groceries then when she's gone, I want you in my room. Blue ones please."