Until you walk a mile in another man’s moccasins you can’t imagine the smell.

Byrne’s line is a comic twist on the well-known proverb about empathy—“walk a mile in another man’s moccasins”—which urges suspending judgment until you’ve experienced another person’s life. By adding “you can’t imagine the smell,” he punctures the proverb’s earnest moral tone and replaces it with earthy realism: other people’s circumstances may be less noble, more uncomfortable, or more complicated than sentimental advice admits. The joke also implies that true understanding is sensory and embodied, not abstract. In a single punchline, Byrne both acknowledges the value of perspective-taking and mocks how easily such counsel becomes a cliché.