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In fact, if you observe those who feign drunken madness carefully, you will find that most of these people only act this way in front of acquaintances or those close to them. If you left them alone on the streets, you'd see they wouldn't dare continue their charades.
As for those so-called tough guys in society, they only act brash and boisterous in front of ordinary people. The moment an officer comes by, don't they instantly turn into well-behaved babies?
The saying "liquor emboldens the cowardly" actually means that after drinking too much, people can quickly think through what they are doing and the consequences that come with it. This so-called madness is nothing more than liberating one's true nature and being willing to accept consequences they wouldn't normally face.
As for being drunk, that's quite straightforward—it means drinking until one passes out, collapsing into sleep without any care in the world.