大大腦子 (adjective)
Pronounced: da da naozi or just DDNZ
Literally "Big Big Brain" in Mandarin, it is often used to express when someone says something smart or describe a smart idea and is also often used ironically.

DDNZ was first coined by the user Jade in the Cave of Linguists discord server
Chris: The only dissection i like is the food coloring part of a bakery supply store
Heather: real ddnz ngl
Lars: thats so ddnz I dont even get it
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