A childhood belief about reproduction

When I was a kid, around five or six, I found out that men and women somehow had sex and somehow it involved boy parts and girl parts. (I didn't know any specifics!) When I heard that the man puts his penis in the woman and fertilizes an egg, I thought for sure that my two testicles were two fully formed little human embryos just waiting to get squeezed into a woman and grow into kids.

This explained a lot of things for me, like why you didn't ever want to be kicked in the nuts. I thought it might even kill the little guys. I also thought that since I had two testicles, I could only have two kids. And men like my uncle, who had six kids, must have at some time had more.

Now that I'm a parent, I find it odd that I have two children, just like I always knew I would.