My big sister had my baby, but I never had sex with her

I had some fun when I was 12 and messed with my sisters sperm donor sample.

Our family, even our friends, when they see my now 14 year old niece, all say the same thing, “She looks a lot like you.”, and she does, there’s a reason for that, a reason no one knows but me, and that reason is because she is my daughter.

When my sister was 21, she had a lot of bad relationships, and she wanted to have a baby, so she decided to skip the relationship part and instead go to a sperm bank.

Every month she was sent a vial of sperm and attempted numerous times to inseminate herself at home, but was unsuccessful on all occasions.

I was 12 years old when she started doing this, and has very recently hit puberty, and like all teenage boys at that age, I was tugging on my cock every waking hour of the day and night, I just couldn’t stop playing with my cock, it was so much fun back then.

And one day my sister was thawing out a vile of sperm on the kitchen counter when her phone rang upstairs, she ran upstairs to answer it just as I came home from school.

I saw the vile on the table inside a jug, she’d told me what it was and what it was all for, so I knew it had sperm inside it, and I got a really dumb idea.

I pulled the vile out of the jug, opened it and poured it down the sink, then I quickly unzipped my pants, pulled out my cock, and started tugging, it never took me long to come, I’d been horny all day, so this took just seconds, and I ejaculated my sperm in to the vile.

I heard her coming back down the stairs, so I quickly pushed my cock back in to my pants, screwed the lid on to the vile and put it back in the jug just seconds before she walked in to the kitchen.

She did notice water on the counter around the jug, “Have you touched this?” she asked.

“No.” I replied.

She shrugged it off, took the vile out of the jug, unscrewed the cap, then extracted the sperm in to a syringe and then she went back upstairs, to, you know, squirt it up her pussy.

A few weeks later she announced to me, mom and dad that she was pregnant, and mom and dad were so happy for her, I was too.

I knew, because she hadn’t had anymore sperm deliveries since the day I replaced the sample with mine, so I knew that I’d got my sister pregnant, I was a bit worried someone would find out though, but they didn’t, of course they didn’t, how would they know what I’d done, I was the only one there.

So, yes, I got my big sister pregnant without even fucking her.

And now I’m a 27 year old man with a secret 14 year old daughter.

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