He's making a face all the way through the explanation to the moment he turns. The kind of face that says both 'oh that makes sense', and 'I have no idea why that's supposed to make sense'.

"Just walking around," He shrugs with one shoulder, still chewing, mouth full. It's a pretty good sandwich, now that he thinks about it, with his other hand shoved in a pocket. He offers it over. "Want some? It's pretty damn good."