Discerning, Discriminating, Know
If you sound like a drunkard when you say things, people will not think of you as a discerning person. "AWh yeah, that game is greatttt," you say in your drunken slurs. But, really, it sounds like you think all games are great, which isn't all that discriminating of you at all.
Picture yourself as a drunkard. What sort of discerning things are you saying? What are you trying to discern? Do you know?
しき
None
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So, we've figured out that your drunken utterances are not very discerning. But let's think about someone who is discerning. You're sitting next to an extremely chic (しき) individual, and boy do they sound like they know what they are talking about. Maybe it's because they’re not drunk like you. They are so chic and have such discerning taste!
Imagine the very chic person saying some very (in your eyes) discerning things about everything around them. Color yourself impressed (and feel the impressed-ness)!