They say when you die there's a light at the end of the tunnel. When my father dies, he'll see the light, make his way toward it, and then flip it off to save electricity.

Structured like a stand-up one-liner, the joke fuses a familiar consolatory image—“the light at the end of the tunnel” associated with death or near-death experiences—with a mundane act of thrift. By imagining his father turning the light off “to save electricity,” Williams characterizes him as compulsively practical and frugal even in the afterlife. The humor comes from deflating a spiritual, transcendent expectation into an everyday household concern, while also conveying a kind of affectionate portrait: the father’s identity is so consistent that it persists beyond death. The line plays on generational stereotypes about penny-pinching and the comic tension between sentiment and practicality.