They can save the world and keep civilization on track day after day but when it comes to their women, they can't do anything right. We were going to blame it on Wonder Woman but we thought that Henderson would probably be a fan of hers but not of Batman, who started out a crime fighter and had to go "bad" for a while, as you said.
Because fanfic Lois has such a temper and can say the most vitriolic and venomous things to Clark for being Superman, she would take her anger out on the suit after Clark leaves before she can start yelling.
Back when we were making up the Scardino Aargh, we did write a lot more stuff. We decided Clark was going to hate Lois' new short hairdo and suggest she get extensions until it grew back out! That, coupled with finding out he was Superman, she would launch into one of her nasty tirades and while she was calling him every scum-sucking name she could think of, she discovers she just has to say the word 'kryptonite' and Clark will fall to the floor in agony. But only when she's V(itriolic)&V(enomous) angry. Regular anger doesn't work, just V&V. She has to be above and beyond regular angry. Because Lois is his greatest weakness anyway, the word said in anger has more power to hurt him than physical kryptonite. (Saying it aloud causes him a fleeting pain but the angrier she is when saying it, the more deadly it is.)
Clark barely escaped, staggering away as she yelled the word over and over at him and throwing himself out her window. He finds his way to Jack and he and his brother take Clark to Alaska to recover in the land of the midnight sun! Hoping against hope that Jonathan and Martha will never tell anyone where they are.