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Definitions by NicSwede

Cosengineering

When an engineer designs a functional prototype that impersonates a sort of cosplay caricature.

@kyussfan6 coined the term in January 2026 in his comment about the stunt pulled by Kazuhiko Hachiya youtube video Sekiyado (LAST) test Flight 20251213 _1st, flying a very cartoonish flimsy airplane with a cartoonish helmet.
"This isn’t cosplay. This is cosengineering"
Cosengineering by NicSwede April 26, 2026