“Whatever the case—if you’re contemplating a big audition, a big purchase, or a big haircut—when Judgy McJudgerson sneers, scoffs, or jokes “Don’t quit your day job,” he’s really saying, “That sounds risky. I wouldn’t.” Perhaps with a subtle note of “I don’t believe in you, so you probably shouldn’t believe in you either.” (Or just “I don’t believe you
have the cheekbones to pull that off.”)”