"My daughter is a fascist. She keeps me up at night with booming music and then yells at me all the time."
vs
"My daughter is a fascist: she keeps me up at night with booming music and then yells at me all the time."
In just that one
colon we learn about the author. Angry people write simple sentences. However, people who are calmer tend to write longer, more logically connected series of clauses and ideas, as seen in the presence of complex punctuation within sentence two. See? I just switched my literary 'voice' (on purpose) and didn't you just
feel it? And then the word fascist: The parent could literally be complaining that her daughter plays Nazi music and shouts, "Zieg, heil!" when questioned, but she could also feel powerless under a figurative totalitarian regime of anger and loud music. Had the writer been more clear, such potentially confusing questions as, "Does she wear her armband to school?" or "Have you considered self help?" could have been avoided.
In other words: language has so many subtle facets and nuances that paying attention to form... *puts on English teacher's sunglasses* pays off!
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*guitar solo* YEAAAAAAAAAAH!