Dutch Courage can help you speak a foreign language, according to a study by Dutch, English, and German researchers that was awarded an Ig Nobel prize on Thursday. They showed that alcohol consumption sometimes improves a person’s ability to speak a foreign language. “We made an important discovery. Drunk Germans usually pronounce Dutch better than sober Germans.”
I don’t think this is quite unheard of. I can speak Spanish (my second language) a lot more smoothly after a few beers.
It’s not necessarily that it improves your speaking, it inhibits self-doubt and perfectionism that usually come with speaking another language.