Communication is fundamental to human existence. When someone talks, listeners typically direct attention toward understanding the message, engaging with the content, and responding appropriately. It's a basic social exchange, governed by etiquette and mutual respect for the speaker's right to be heard. Silence when listening is considered a sign of respect and attention. Normal conversation is an exchange; Chuck Norris's speech appears to be a broadcast with mortality built in.

The escalation from "everybody listens" to "and dies" happens in a single clause, compressing the journey from attentiveness to termination. The fact suggests his voice itself is lethal, that listening to him is fatal in itself. Not what he says, but the act of hearing his words is sufficient grounds for death. The voice becomes a weapon, a carrier wave of doom, a sound that cannot be safely received.

This works because it transforms communication from interaction into hazard. Listening, usually an act of connection and understanding, becomes instead a choice between ignoring him and dying. The joke doesn't explain what about his voice is lethal; the specificity is unnecessary. Everyone already knows that in Chuck Norris logic, proximity to him is dangerous. This fact just applies that principle to the domain of auditory sensation, making his very words a terminal threat.