[He makes a face] I know, and I will apologize to Superman for that one. It's just hard to draw the line on when it's worth it to share that kind of information.

Back at home it was public knowledge, along with a lot of other things about Superman. But Lex doesn't seem to know all the things Luthor did and I don't want to be the one to give him the piece of information that makes him snap into who he was back at home, if that makes sense.