"Clark can barely defend himself against you when he's around, isn't it kind of a low blow to insult his alternate without him?" He wasn't really reprimanding her, rather he was getting his own playful jab out there. He had mostly good things to say about Clark and he even selflessly got him out of a bind once when Lois first figured him out. If anything, he owed the man.
One hard drive down, he didn't bother to do much to reassemble the system. He made it have the looks of being normal, but none of the screws were put back right and he left the inside in disarray. Taking on her request, he started on retrieving this Lois Lane's hard drive. They should be thanking God above they were without security here. Otherwise there'd be no way they could recover all this data.
"Say, Legs, after this, you think we can move on up to cars? This hard drive stuff is child's play," he said sarcastically while finishing opening the system. Now that he had a general idea of the layout, this drive would be even quicker to get. He better hurry before she finds another job for him. Since when did he become the sidekick here anyway?