As much as it pains me to say it...Ultrawoman *cough*
Lois was UW for, what, two days? In that time she couldn't have possibly come to completely understand what Clark had to face on daily basis. Not to mention the total lack of dealing with Clark sans superpowers--or who he lost them to.
Then again, maybe someone upstairs was as nauseous over that suit as I was and decided to wrap it up in one episode.
