I still remember the first time I came in my sister's food. The two of us had returned home from school and she'd immediately gone flop on the couch and begged me to cook her something. Being the kind and caring brother I am, I naturally hopped into the kitchen and started making a couple toasties - nothing special, just a couple pieces of bread with cheese and some canned spaghetti.
At that time the two of us were both 18 and in our final year, so we were both pretty stressed. Fortunately, we were pretty close, so we didn't hold much back from each other, and our parents were rarely if ever home, so we'd developed this unusual relationship where we were both siblings, best friends, and, to a degree, parents to one another.
Point being: my sister's never had any reason to doubt me, and I can say the same about her. We were tight. We hung out together. We leaned on each other. We told each other everything. Well, almost everything.
You see, I'm a pervert, a really big pervert, but my sister doesn't know that. Until that day she had no reason to anyway - we both kept that aspect of our lives separate, not that either of us were doing it, but you know what I mean.
Anyway, on that day my sister had quite casually dozed off on the couch while she waited for her snack. Nothing unusual, in fact, this was completely normal. My sister's pretty lazy, but, most importantly, when no one but me is around she can be a little careless.
I could see them.
She'd fallen asleep lying on her stomach, one foot hanging off the side of the couch, and in her laziness she hadn't even bothered to tidy up her uniform from when she'd gone 'flop'. Her skirt, which was already quite short, had risen up, the hem of it having positioned itself in such a way that her panties were looking me in the eye.
White.
Light blue.
Striped.
Don't get me wrong - I'd seen a girl's panties before, my sister's in fact, but not while said girl was wearing them.
Up till that point, I'd always seen my sister as nothing more, yes, I could acknowledge that she made the other boys at school go 'wow', and a good few of them probably fapped to her, but to me she was merely my sister, best friend, and, to a degree, mother.
That isn't to say I myself wasn't aware of her features, but as her brother there's always been a wall of sorts, a barrier, a line if you will. No matter how beautiful she was, I could never cross that line without a sense of disgust filling me.
That would be incest.
Taboo.
Forbidden.
So I never crossed that line, and I never wanted to - until that point. You see, I don't know what it was about that day, about that sight of my sister who trusted me with all her heart, laying there, innocent and completely defenceless, that made me want her.
Had I been watching too much porn? Reading too much smut?
Probably. I guess regular or 'vanilla' pornography no longer excited me - I needed something finer. More developed. More cultured.
So I did what any sensible young man would do, I wrapped my fingers around my cock and jerked off, right in front of her. I didn't touch her or do anything weird. All I did was watch her as she slept, listening to her soft breaths as the hand stroking my cock sped up more and more.
I'm gonna cum! I thought at the time.
I knew I couldn't cum on her. I mean, I wasn't that debauched, but I couldn't stop myself, I needed to do something. Something taboo. Something more tasteful than cumming in my hand or on my sister's face. Again, an idea struck me, a disgusting and depraved idea that only a sensible young man like myself could think of.
I came on them. The toasties. The snack my sister was so eagerly awaiting. God I came harder than I'd ever come before. My balls were so full of seed that my spunk oozed out of them. No way would she eat these. The musky scent alone would give away my deed.
But I had to try. I did my best to clean them up, to make them look no different than any other day.
"Haaaa~"
My sister yawned and pushed herself up, peeking over the side of the couch.
"Mmmm~ did you make toasties?" she said, tiredly. "I'm so hungry!"
I handed her a plate, the toasties sitting on top.
"You're not having any?"
I barely managed to hold back my disgust at the thought. No way in hell was I going to eat my own cum.
"Nah, I'm not hungry."
"You sure?"
The concern in her voice was evident - she didn't want me to go hungry.
