Dean looked up, more out of mild surprise of being interrupted from his thought process. Which, itself, had been split between searching for the bottle opener and imagining it's little arms pumping up and down. What? It amused the hell out of him. Before he looked back down, then back up when he saw who it was. "Hey." He said before continuing. "Yeah. I can't seem to find the bottle opener."
Stopping his search to look more fully at Clark. Seeing him dressed as if it wasn't a heat that would make people sweat bullets going around in the apartments. Because the heat didn't affect him. Dean was a little bit envious at that but mostly he thought the guy was missing out on the fun. Then again he probably had Lois Lane cooped up in his apartment or something. Not that anyone could "coop up" Lois. Then again last Dean had heard-from a drunk Lois herself-they were both playing the adult version of footsie. Dean didn't know and as much as he liked Lois it wasn't something he wasn't making his interest. Other people's relationship business. He wasn't that bored quite yet.
Mentally shaking those thoughts he asked, "You seen it? I've looked in every drawer in this place. Some of the cabinets too. Can't find it."