Since I'm rewatching mid/late S2 right now, I've just seen some of the dangers of voyeurism as enacted both by and on Lex in Insurrection and other episodes. He's watched by Lionel, which gives Lionel power over him. So he attempts to watch Lionel back to gain power himself. This is what leads to him seeing Helen speaking to lioenl, and that makes her angry at him. She leaves, and he looses love to pwoer, and has to give up that power to regain love. I haven't yet gotten back up to where he shows her the COCK, but that again is giving up his power to try to get love. Then when Clark sees the COCK, it's like when Helen saw the pictures of her with Lionel, and he leaves. But it was also Lionel who gave Clark the key to the COCK, and Lionel who approached Helen, figuring either she would take the money and go or Lex would learn about it and throw her out. Lionel who was, at that point, pretending to be blind, so that he could gain power by seeing what others thought he couldn't.