I liked the twist. I, too, expected to hear Bernie Klein tell Superman that he couldn't have children. But to hear Dr. Friskin tell Superman that his son was mentally ill was a shock. And I knew that there was no joke attached to this. Mary plainly stated that this offering wasn't a funny one. So if you're offended, Beethoven, it's because you didn't read the whole post.
My first thought, after reading the final line, was that our world would not be able to handle a super-powered schizophrenic. How will Superman's son be treated? Could any standard treatment help him? Will he need to be isolated form the population? Can anyone besides his father control him if he becomes delusional or even violent? And how will his mother react?
This would be terrible news. I can't imagine much that would be worse for any father to hear. My heart goes out to the whole family.