Either the absolute maximum point of fun in a session — that hour where everything clicks, the stories are flowing, nobody wants to leave, and it couldn't possibly get better — or, in British slang, a situation that is outrageously unfortunate or embarrassing. Peak craic as a positive is sacred; it's the moment the whole night was building toward. Peak craic as shade means someone managed to have the worst time in the most visible way possible. Both readings are in active use.
Saturday was peak craic — ended up at a lock-in with a live fiddle player and a dog that knew tricks.
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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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