Well, honestly? The reaction isn't as groan-worthy as it could've been, but the abruptness of his sarcasm does have him holding off on pulling the trigger. His shoulders sag just a touch, like he's just waiting the rant out, but still holding the weapon up to his head.

"Glad you got that off your chest, pendejo," he mutters, claw still sitting on the trigger. Is this even worth wasting a bullet over? He doesn't exactly have any extra ammo on him since he's usually materializing them out of thin air. He'll stall for a bit- look for weak points on the armor that this guy is wearing. It's unfamiliar, but all armor types have similar weak-points, he figures.

"Who's to say this isn't a movie already?"

Maybe he can draw some world information from him too while he's at it.