We must have seen people speaking English while drinking alcohol. Alcohol gives them an ‘I don’t care anymore attitude’ as their senses of thinking are slightly dull or in some cases switched off. So, all human feelings that originally are shown by such people like shyness, fear, calmness, diplomacy, sadness, etc are all lost temporarily. They behave the opposite of what they normally are.
The main reason we appear to speak a foreign language better while drunk is that, in our state of inebriation, we lower our affective filter. As a result of this decrease in inhibition, we also tend to worry less about the grammatical rules and possible mistakes we can incur in and we adopt a more relaxed attitude towards verbal communication, thereby resulting in a more fluid stream of words out of our mouths.
But, don’t go running for a bottle of Jack Daniels as your language-improvement solution just yet! There are two major downsides to this strategy.
The first is that despite your increased confidence and fluidity, you are also likely to make many more grammatical and pronunciation errors, and perhaps even ingrained bad habits that will persist.
The second downside is that any improvement in confidence/fluidity that may be experienced while drunk is unfortunately short-lived. If you rely on alcohol as your primary facilitator of communication, then you might end up resorting to alcoholism to master your language of preferences! Not a good plan.