I just saw this thread for the first time. While I work my way through it, I thought I would leave three comments:
- If nobody has posted this yet, https://greensdictofslang.com/ is a great resource for slang and vulgarisms.
- My favorite saying comes from Polish: masło maślany ("buttery butter", said when someone is using too many words or is being redundant–language geeks call that a pleonasm).
- I also really like how Indian English has a lot of formulations that are logical but have not been widely adopted outside of India, such as needful and prepone (another fun language resource: http://www.samosapedia.com/ )
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ETA: I just remembered William Safire of the
New York Times. He wrote a great column, On Language, that I think people here
will dig:
https://www.nytimes.com/search?dropmab=false&query=william+safire§ions=Magazine|nyt://section/a913d1fb-3cdf-556b-9a81-f0b996a1a202&sort=best
A lot of the English spoken in India (where English is a sort of lingua franca, especially for the educated middle class, as regions and ethnicities in the country/sub-continent speak a great many different languages) has a delightfully old-fashioned (and elegantly precise) aspect, exquisite on the ear, especially when compared to the English currently spoken in the British Isles, (and the US).
To a certain extent, it is similar to what would have been the spoken language of upper middle class England of 70 or 80 years ago, when India gained its independence, in fact, the sort of English one comes across in - for example - Enid Blyton.
I remember sharing a polling station in Bosnia a quarter of a century ago with an utterly charming Sikh police officer, from India, (I was there to supervise the election, the polling process; meanwhile, he was present to keep an eye - a very close eye - on the local police or security forces), who spoke the sort of exquisite English rarely encountered outside of a book.
We were discussing the fact that both India and Pakistan had become nuclear powers, and I vividly recall the exquisite precision of his beautiful, eloquent and elegant speech: "It is a matter of deep distress to me that my government has seen fit to detonate a nuclear device..." I was almost whimpering with worshipful delight, just for the joy of listening to him, savouring his elegant, slightly anachronistic speech, both what he said and how he said it.