put on his ass

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释义
如坐针毡（中间+sb .）
to feel as if sitting on bed of nails;to be on pins and needles

例句
Tom: Enough to put Walker on his heels?
Zoe:Fuck his heels ,it's gonna put him on his ass.(House of Cards)
汤姆：这可足够让汤姆疲于奔命的。
佐伊：岂止，足够让他如坐针毡（纸牌屋）