What became of his mouth? What of his two arms? What were his two thighs and his two feet called? His mouth became the Brahmin, his two arms were made into the Kshatriya, his two thighs the Vaishyas, from his two feet the Shudra was born. So this section gives a divine explanation for the caste system. Brahmins, who as Purusha's mouth, speak to the gods, were at the top. Kshatriyas, from Purusha's arm, became the warriors, as you no doubt know, if you've ever attended my gun show.