According to Osho, calling some people 'cabbages' honors simple, silent innocence—cabbages are like buddhas, more harmless than men. Saying someone is an 'asshole' is not condemnation but plain description—perfectly okay to acknowledge. He uses such blunt, playful labels to puncture ego, mirror reality, and provoke self-inquiry rather than respectability.
He says 'cabbage' points to innocent, peaceful being, and 'asshole' is just a blunt fact—no insult—used to wake us up.