Everyone in this story is over the age of consent.
*****
My Sister Hilary Helps Me to Swallow My Own Cum
A quiet afternoon for once. Everyone was out so I had time to myself to have a long lazy wank.
I'd had this desire to eat my own cum for ages, after my sister Hilary had tried it, and I just wondered what she enjoyed about it. I'd often resolved to swallow it, but once I'd cum, I didn't really want to. Hilary had this idea to save it for the next time so I'd saved five lots in a small cup by freezing it. She was out this afternoon with her boyfriend - she likes his cum too, she told me - so I stripped right off, even her pink panties came off, and got the frozen cum from the fridge. I made myself a glass of pee, and sipping it slowly I played my cock into stiffness.
"I'm really gonna eat my own cum now, since Hilary said it's so good." I thought. I put the frozen cum cube into my mouth and crunched on it. It was just like eating a freeze at first, but as it melted I could feel the creaminess on my tongue, with a slight peppery after taste. Slowly I felt my self-edging towards an orgasm, and I swallowed it, all of it. It was fantastic, I'd finally swallowed my own cum! My heart was pounding with excitement and I was on the verge of cumming when I heard the front door open.
"Shit" I thought and covered myself up with a sheet. I didn't want Hilary's boyfriend to see me like this.
"Are you there, Mark?" she called. "Nearer than you think!" I thought.
She came into my room and said "I've got Steve with me. Can we come in? Did we disturb your wank? Have you swallowed that cum you'd saved yet?"
"What a lot of questions to ask me, and in front of Steve! But the answers are Yes, Yes, and Yes. And it tasted good. Now I know why you like it so much."
"Oh don't worry about Steve, I told him all about our games." Steve had been my roommate at college, but even so I didn't know him that well, though I suspected he was bi.
"Come on in Steve, and take those clothes off." Hilary said.
Far from being shy he jumped at it, and the three of us were soon in bed with Hilary in the middle.