I was back living at home after a couple of years away. I'd been working in the city, barely able to afford my shitty apartment by doing odd computer jobs to supplement my terrible pay but when the economy crashed the side jobs dried up and I just couldn't stay. I was lucky enough to get a job close to home though and my parents were more than happy to have me back for a while.
My younger sister was going to the local community college, when I moved out she took my bigger room but she helped me paint over the pinks and pastel colors of her old room so I didn't care. The smaller room was still way more comfortable than my tiny apartment ever was so I didn't complain about it and was thankful to have a roof over my head. My sister Laura had changed too, she was always pretty but had really grown into a beautiful woman, at 20 she was quite the head turner but thanks to our parents she wasn't conceited or bitchy about it. She liked to tease me about living back at our parents at 24 but we always got on well.
"So you've been at his new job for 6 months and you already have time off?" said Laura.
"Yea, their time off policies are awesome, I'm really happy there so far," I replied.
"So what do you have planned for the day, I have no classes so I was going to relax by the pool."
"Maybe have a swim then try out that new coffee shop, haven't decided."
"Seriously, with the coffee machine Dad has you're going to waste money?"
"I don't know how to use that thing."
"I can show you, I'll make you an awesome latte after I've showered."
"Why are you showering if you're just going to sit by the pool?"
"I've already had my workout swim this morning so I have to wash this chlorine out of my hair."
I had been too focused on my phone to even notice her wet hair. When she came back she was dressed in a barely there bikini, I had to quickly remind myself she was my sister. Her thong did nothing to hide her perfect ass and the top served as something to cover her nipples and not much more.
"I uh, take it mom and dad already left for work?" I asked.
"Hours ago, why?" she replied.
"I think they'd both freak if they saw you wearing that," I laughed.
"Just as well it's just you then huh. And I'm about to make you an amazing coffee so no making fun of my sunbathing suit."
"I wasn't making fun sis, it's just a bit revealing."
"Oh and I'm sure you just hate it," she said, grinning.
"You're my sister, Laura."
"I'm a woman."
"Weren't you making me a coffee?"
Laura laughed, she was moving towards me, pushing her chest but she finally turned round and started making my coffee.
"You're so easy to embarrass big brother," she said as she worked.
"Whatever," I replied.
Our dad loved his coffee, he'd bought a really expensive, full of bells and whistles coffee machine that was way more complicated than the 'put water and coffee in' thing than I was used to. Laura brought me a latte in one of dad's clear mugs, it looked amazing. I took a sip to try it.
"Oh this is amazing," I said.
"Well, enjoy. I'll show you how to use it later, it's less complicated than it looks. Mom went nuts until he made her one of her specialty coffees she usually buys."
"Well thank you, this is really good."
"In return, can you rub oil on my back later?"
"I wondered where the catch was. Sure," I replied with a smile.
Laura left me alone with my coffee, I enjoyed it then washed my mug. I looked out of the kitchen window at her laying in the sun. Her body glistened with the coating of oil she'd put on, she couldn't see me from where I stood but I couldn't help admire her. Sister or not she really was sexy, her breasts were as just as perfect as her ass and I let my eyes wander over her curves. I felt my cock harden, I was thankful I was still in my sleeping shorts and robe and alone as hiding it would have been tough but I said 'fuck' out loud then went to shower. I kept the water as cold as I could, my erection wasn't going away though. I tried jerking off but couldn't get there and it was still hard when I dressed in my swim shorts. I didn't stop, I walked outside and jumped straight into the pool. I swam a couple of lengths, I swam hard and was out of breath by the time I stopped but I was still throbbing hard. I stayed in the water, holding on to the edge of the pool hoping it would go away.
"Hey, can you come and get my back now please?" said Laura.
"Uh, sure, be right out," I replied.
I tried to get out without my crotch showing but Laura was looking right at me and I swear her eyes went right to the tent I was making in my wet shorts.
"Exciting swim?" she laughed.
"I.. I get that way sometimes with exercise, leave me alone," I replied.
"I was kidding, chill out. The oil's right there, I can get my ass, just my back and back of my legs."
"Baby oil? Won't you burn with just this on?"
"I'll only be out here for 10 minutes then I apply other stuff, I'll be fine."
I put a good coating of oil on her back and legs, I almost wiped all the oil off my hands but had another plan. I made it to my room and used the oil to jerk off, finally climaxing and spraying my cum over my chest. My erection finally subsided and I showered then went to our movie room to watch tv.
The rest of the day was pretty uneventful, our parents both had a shitty day at work so they didn't talk much but they were happy the next morning when they left for work again. I sat checking my social media in the kitchen when Laura appeared, it was pouring rain so no bikini but she was just wearing a loose t-shirt that barely covered her ass. She wasn't wearing any panties, I couldn't help noticing when she reached up to get a coffee mug.
"Same as yesterday?" she said to me.
"Huh?" I replied, barely registering what she said.
"Same coffee as yesterday, nice and strong?"
"Uh, sure, thought you were going to show me how to use it?"
"Yes but I enjoy using it so I'll make this one, you can have another later then I'll show you."
She handed me my coffee when it was made then sat down across from me at the table and started looking through her phone. Despite her t-shirt being pretty baggy, I could see she wasn't wearing a bra and her nipples were poking out.
"So no sunbathing today with this rain, what do you have planned?" I asked.
"Maybe do some reading, my friend recommended a great book and I was going to get it for my reader."
"I think I'll just watch a movie, I was going to go cycling today."
"Do you want some eggs? I was going to make some. How's the coffee?"
"Coffee's amazing, thank you. Sure, I'll take some eggs."