There is simply no other pairing in any other fandom EVER that compares to the erotic potential of Clex.

That is pretty much the truth. There is so much that can be done with them: ANYTHING. I always say that if you aren't having flying-sex or Lex putting all his weight on Clark's throat or Clark angsting about whether his semen is toxic or something anything you aren't using the fandom to its full potential. But even when they're just being very normal, so so so hot.