You should know. The opener used in Reddit's r/YouShouldKnow community, where users share useful life tips, warnings and bits of practical information they think more people ought to be aware of. Functions like a friendlier, more advice-flavoured cousin of TIL.
YSK that most painkillers are far less effective if you wait until the pain is severe to take them.
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Viral internet speak — memes, ratios, main-character moments, and the algospeak of every platform from Twitter to Reddit to TikTok comment sections.
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