Rodeo knows Teagan, and he knows she drives. She's heavy machinery, and it's clear that this guy isn't interested in winding up under her wheels. Rodeo can't blame him. His circumstances right now are pretty rough, and as a guy who can't stand feeling like he's not in control of the situation, he gets how quick that can piss somebody off. So when the stranger's rage overtakes him, Rodeo just hopes staying calm and trying to talk him out of it will work. This guy doesn't seem unreasonable, and though Rodeo knows he's taking a huge risk by having a stranger in such a vehement rage still breathing in his camp, he always goes with his gut. And his gut says that drawing his weapon (or using it) on this guy would be a mistake. Rodeo believes he can be talked down from his fury, and he also believes it'll be worth it.
Because the guy is fucking terrifying, and Rodeo fucking loves it.
He doesn't understand any of the Spanish that Marcus is spitting, so it doesn't piss him off none. Maybe if he knew what the stranger was calling his Little Queen of Spades, he'd start losing his own cool a little. But ignorance is bliss. Puta-- what does that mean again? Bitch? Whore? He's gonna go with bitch. He can swallow that. Teagan is kind of a bitch. The kind of bitch who can lay a man out with her right hook. A bad bitch. He won't let those poorly translated insults get under his skin. He's gotta keep the peace here.
And maybe he is a little curious what's in the bag. But Rodeo doesn't think that taking it is the best way to find out. This stranger could be an asset to them. He's real big and mean looking, but he's clearly not a rotten sort. Teagan would have put a bullet in him if he was. He'd have shown his true colors way back in that truck cab, and Teagan would have driven home a blood-spattered Ram. If he wants to know what's in the bag, he thinks he's better off trading for it in trust. So he doesn't ask, doesn't even look much at the thing, making sure Marcus doesn't feel like he's interested in it. He's trying hard to keep this situation from blowing up in his face.
Rodeo knows that Teagan was just doing what she does best-- looking out. The bag could very well have something valuable in it, and if she saw the value in what he's carrying more than in the man himself, Rodeo can't blame her one bit for that. She made her own call on it, and Rodeo doesn't mean to disrespect her choice. But now the Dog King is taking over, and he decides what's spoils and what's an opportunity. Still, he doesn't forget to turn back to Teagan, giving her a nod of approval when she backs down. "Thanks, Lady," he says.
When Marcus seems like he's mastered his rage and isn't going to come at Teagan again (yet), Rodeo drops his hand from his chest and takes a step back to give him some space. "We ran outta everything," Rodeo tells Marcus, shaking his head. He squints out at the sun-scorched terrain of his camp, gesturing towards it. "All this used to be trees and shit. Nothin' but dust now. Gas killed everything. Got no plants, no animals, nothin' that don't come out of a can or a package. You from somewhere else?"