Well, he did know Superman was Clark back home. It hadn't been outright confirmed for him, but he'd gone to the Kent farm for dinner and then met Clark and dropped hints. It was on the way back to Metropolis and Supes showed up and hinted back. Here though, Superman had told him so he knew. He just...doesn't know if Kyle knows...Secret identities, ugh.

"On a farm and I do some heavy lifting as well. Equipment, boxes, that sort of thing."

So basically the stuff he would be doing in the future on the Kent farm.