Instant sunshine is a darkly comic euphemism with multiple lives: most potently, it's slang for a nuclear detonation — the blinding flash of an atomic bomb reframed as something cheerful. It also does duty as slang for LSD, where the 'sunshine' metaphor maps onto psychedelic brightness. The casual framing of catastrophic or intense experiences as something pleasant is classic dark-humour wordplay.
The briefing referred to the weapon as instant sunshine, which was the most unsettling piece of military understatement I'd ever heard.
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The vocabulary of software engineers, AI researchers, and anyone living in a terminal or on GitHub — from LLM to MCP, CORS to vibe coding, agentic to enshittification.
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(slang) Suntain oil or bronzing oil.
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(slang) The detonation of an atomic bomb.
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(slang, drugs) LSD.
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