The old man in the booth is not using his inside voice, despite his son's best efforts to shush him.
"So how do you kill all the butterflies?" he asks, despite me having said, only moments ago, that we get them after they've died, and the sign that says that we get all our butterflies from places that help support the ecology and butterfly species.
I smile at him without blinking. "Well, that's an interesting question," I say, "because it presupposes that I'm some sort of butterfly murdering psychopath."