He decided that it was a good idea to avoid arguing with her when she was in such a weird place. Clark put up a hand, indicating that he was letting it go. Normally he would have pressed on until his point was made, but right now he'd very much rather appeal to her good side. Even if that meant letting things like her obvious need to avoid go.
Anything else? What could possibly top off the alien heritage thing? Oh, right. There was that. Bracing himself slightly, Clark cleared his throat again and looked down. Lois probably wasn't going to like this one. Unless she had already put two and two together. But the shock of finding out that your co-worker slash friend slash whatever else he was might have made it so that she didn't even have the chance to think that far into it.
"You know how I always actively serve as a skeptic to The Blur?" Clark winced slightly. "Yeah, that's because...that's me. I'm him."