Wit is the key, I think, to anybody’s heart. Show me the person who doesn’t like to laugh and I’ll show you a person with a toe tag.

Roberts links humor with vitality and emotional openness. Calling wit “the key” suggests that laughter disarms defensiveness and creates quick intimacy—an interpersonal shortcut to trust and affection. The dark punch line about a “toe tag” (a morgue identifier) exaggerates for comic effect: someone who never enjoys laughter is, in her view, spiritually inert, cut off from a basic sign of being fully alive. The quote also implies a preference for partners and friends who are playful and responsive, framing humor not as decoration but as a core human connector and a measure of psychological health.