Originally Posted by
Robanker
It read more to me like Clark's not good at acting like he's acting. He can't do a part within a part. He can do Superman and Clark Kent fine, but when he has to be Clark playing "Clark," he overacts like a chump. I dunno, it worked for me. It is inconsistent with his past as Chaz, though.
It could also be that once you're familiar with the actual Clark Kent, you are hyper aware of the affectations he puts on when posing as Superman or the Planet's Clark. It probably looks bad in hindsight and they're just having some fun with it.
But I've maintained that Lois should have always known and could never prove it, so maybe it's being played straight and he just can't act.
Probably just a throwaway joke you're not meant to think on, though.