pic related.
Defense Language Institute lesson plans ideas and exercises to deploy in any language.
go to an angry market, just angry English speakers who hate you, eat what you get go back until you are ready to attack the English speaker, do not break the law. you want the confidence to tell the English speaker he is wrong in his native language and you want the ability to reason in the language that he is wrong in. this shit is dangerous because he could attack you, doubtful but could.
you want a bigot who hates you.