A local joke from my country

So Bill works for the secret services and gets sent to Russia to spy on them. Eventually he got caught and the Russians start torturing him in order to get the nuclear missile codes of Bill’s country. Bill shows incredible strength and integrity and doesn’t say a word. The Russia are impressed with Bill, and eventually they decide to send him back home. After his arrival, Bill’s colleagues ask him about his mission in Russia, to which Bill replies: “Y’all better start learning those codes, dudes, cus if they catch you that you don’t know them, they’ll beat the living shit out of you!”