"Stop looking madder than usual." Duo prods with a little shove with his elbow, a good-natured way of telling Heero to stop thinking so damn hard. Yes, it seems like something that wouldn't happen in a normal place, or at the very least is near-on unthinkable.. and yet here they are anyway. Of all people prone to go with the flow (with a few tantrums along the way) - Duo will encourage it from Heero where he can.

Asked what he thinks, though... Duo hums softly, head tipping side to side as if weighing his thoughts in a very literal motion.

"I try not to do that too often, y'know." A lie, but one he's willing to lean into if it so suits him. At the moment it does, at least for the momentary joke, but he's been contemplating what the hell is going on here maybe even a little too hard since he'd arrived thinking he was on his own.

"I'm wonderin' if this is either some creepily elaborate set, number one... Or number two, if the people that live here are.. I dunno. Typically livin' underground? Which seems unlikely, but there's also not like.. animals, at all. Not a subway rat or an ant.. it's fuckin' weird. Even colonies have rats."