You wimp — you can't even handle this little thing.
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Northeastern (东北话 Dōngběihuà) and northern dialect. 面 (miàn, soft / floury) describes the texture of cooked pumpkin — soft and mealy — and metaphorically a person who is mushy, weak-willed, and easy to push around.
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Same logic as English 'squash' for a pushover: a soft, easily squished vegetable becomes the slang for a soft, easily pushed-around person.
