proof that I am a horrible mother

My son saw this and now thinks that the birdman went off to get with Katy Perry. He informed me that their offspring would only be 75% human.
http://www.universalsubtitles.org/en/vi ... %20Kilmer/

Haha, that's golden.
Don't worry about it, kids think things like that all the time, I know I did!
Reassure him that it's just a movie and that something like that can't happen in real life or something and all is fine.
Don't blame yourself for a kid being a kid.

And hey, at least he's good at maths?

I believe she is single now so Birdman does have a shot.

Would the offspring be born as normal people? Or would Katy Perry lay eggs?

Nothing to worry about, he had plenty of protection.