Now your story is exactly the reason why whenever we have younger kids @ our place and they're in my room looking at my fish in awe, then turn to me and begin to speak, my auto-response is "Nope"
I have bred Corydoras in the past, but the male was sterile

in other words he didn't produce sperm. Their eggs were always white and/or eaten.
Definately I will post some pics as soon as they are visible to the camera!

I've nicknamed one "Whoops" and the other "Oopsy" cause they weren't supposed to happen!